Detailed Explanation:

Rationale for Correct Answer: This scheme is a business email compromise (BEC), also known as CEO fraud. Fraudsters impersonate high-ranking executives to trick employees into transferring money or disclosing confidential information.

Analysis of Incorrect Options:

A. Reverse social engineering – Involves the fraudster posing as a helper and then exploiting the victim, not impersonating executives.

B. Executive email attack – A generic term, but the ACFE recognizes BEC as the precise classification.

C. Electronic piggybacking – Refers to unauthorized access through another user’s session, not impersonation.

Key Concept: Social engineering and cyber-enabled fraud – BEC schemes.