Certified Internal Auditor (CIA) Part 1: Business Acumen — Question 144

An internal auditor in a small broadcasting organization was assigned to review the revenue collection process. The auditor discovered that some checks from three customers were never recorded in the organization's financial records. Which of the following documents would be the least useful for the auditor to verify the finding?

Answer options

• A. Bank statements.
• B. Customer confirmation letters.
• C. Copies of sales invoices.
• D. Copies of deposit slips.

Correct answer: D

Explanation

Copies of deposit slips are the least useful for verifying the auditor's finding because they only show what was deposited, not what was actually received or recorded. In contrast, bank statements, customer confirmation letters, and sales invoices provide more relevant information regarding the actual transactions and their existence in the financial records.