Theft of incoming checks usually occurs when ________ is (are) in charge of opening the...

Detailed Explanation:

Rationale for Correct Answer: When a single employee is responsible for opening the mail and recording payments, the risk of theft of incoming checks is greatest. This lack of segregation of duties allows one person both custody of funds and recordkeeping authority, a classic internal control weakness.

Analysis of Incorrect Options:

B & C – Involving two or more employees provides better segregation of duties, reducing the risk.

D. None of the above – Incorrect since option A directly matches.

Key Concept: Segregation of duties to prevent skimming/theft of incoming checks.