IIA-CIA-Part3 Leak Questions

Under the variable costing method, product costs include only costs that vary with production, such as direct materials, direct labor, and variable manufacturing overhead.

(1) Direct labor costs. ✅

Correct. Direct labor is a variable cost directly tied to production levels, making it a product cost under variable costing.

(2) Insurance on a factory. ❌

Incorrect. Factory insurance is a fixed manufacturing overhead cost, which is not treated as a product cost under variable costing. It is considered a period cost instead.

(3) Manufacturing supplies. ✅

Correct. Manufacturing supplies (e.g., lubricants, small tools) are variable costs that increase with production, making them product costs under variable costing.

(4) Packaging and shipping costs. ❌

Incorrect. Packaging and shipping are selling & distribution costs, which are classified as period costs, not product costs.

IIA GTAG – "Auditing Cost Accounting Systems"

IIA Standard 2130 – Control Activities (Cost Management)

GAAP and IFRS Guidelines on Variable Costing

Analysis of Answer Choices:IIA References:Thus, the correct answer is B (1 and 3 only) because direct labor and manufacturing supplies are considered product costs under the variable costing method.

When inventory is understated (not included in the physical count) at year-end, the financial impact affects both cost of sales (COGS) and net income as follows:

Correct Answer (C - Cost of Sales is Understated and Net Income is Overstated)

The ending inventory is part of the formula used to calculate the cost of goods sold (COGS): COGS=BeginningInventory+Purchases−EndingInventoryCOGS = Beginning Inventory + Purchases - Ending InventoryCOGS=BeginningInventory+Purchases−EndingInventory

If ending inventory is understated, then:

COGS will be understated (because inventory that should have been counted as sold was omitted).

Net income will be overstated because COGS is lower than it should be, making profits appear higher.

This error causes financial misstatements, violating IIA auditing standards for financial accuracy.

Why Other Options Are Incorrect:

Option A (Cost of sales and net income are understated):

Net income would not be understated—it would be overstated because the cost of goods sold is too low.

Option B (Cost of sales and net income are overstated):

COGS would be understated, not overstated. If COGS were overstated, net income would be understated.

Option D (Cost of sales is overstated and net income is understated):

The opposite happens—COGS is understated and net income is overstated.

IIA GTAG 8: Audit of Inventory Management – Covers financial impact of inventory misstatements.

IIA Practice Guide: Auditing Financial Statements – Addresses common inventory errors and financial reporting impacts.

Step-by-Step Explanation:IIA References for Validation:Thus, C is the correct answer because an understated inventory reduces COGS and inflates net income.

According to IIA Standards, if senior management accepts a risk that the CAE believes may be unacceptable, the CAE must judge whether the risk is indeed acceptable and, if not, escalate the matter to the board. This ensures that governance bodies are aware of significant exposures. Reporting directly to external stakeholders (Option A) is not internal audit’s role. Option B alone is insufficient if the risk is significant. Option D applies only when management’s acceptance aligns with tolerance.

When internal audit identifies a risk that appears unacceptable, the CAE should first discuss the matter with the responsible management. This ensures management has an opportunity to explain their rationale or adjust actions before escalation.

Option A (direct escalation to senior management) or Option C (to the board) are appropriate only if management refuses to act. Option B (sending a letter with a deadline) is not aligned with IIA guidance.