What constitutes an improper payment, and what measures prevent it?

What constitutes an improper payment, and what measures prevent it?

• A. A payment that is not authorized, unsupported, or erroneous; prevented with proper documentation, controls, and verification.
• B. A payment issued under any authorized contract, regardless of documentation.
• C. A payment made with full documentation even if wrong amount.
• D. A payment that includes a small rounding difference.

Answer: (A)