A manufacturer ss deciding whether to sell or process materials further.

When deciding whether to sell a product as-is or process it further, a manufacturer should consider only relevant costs—those that will change based on the decision.

Why Option A (Incremental processing costs, incremental revenue, and variable manufacturing expenses) is Correct:

Incremental processing costs: These are additional costs required to process the material further, making them directly relevant.

Incremental revenue: The additional revenue that would be generated if the product is processed further is a key factor in decision-making.

Variable manufacturing expenses: These costs change with production levels, making them important in the decision-making process.

Why Other Options Are Incorrect:

Option B (Joint costs, incremental processing costs, and variable manufacturing expenses):

Incorrect because joint costs (costs incurred before the split-off point) are sunk costs and are not relevant in the decision.

Option C (Incremental revenue, joint costs, and incremental processing costs):

Incorrect because, again, joint costs are not relevant to the decision.

Option D (Variable manufacturing expenses, incremental revenue, and joint costs):

Incorrect because joint costs should be ignored in a sell-or-process-further decision.

IIA GTAG – "Auditing Cost Accounting Decisions": Discusses relevant costs in decision-making.

IFRS & GAAP Cost Accounting Standards: Explain cost classification and decision-making.

COSO Internal Control – Integrated Framework: Recommends proper cost allocation methods for financial decisions.

IIA References: