Synthesize your understanding of phosphatases' role in insulin signaling and signal termination.

• A. Phosphatases remove phosphate groups, terminating the signal and ensuring proper regulation of cellular responses.
• B. Phosphatases have no role in insulin signaling or signal termination.
• C. Phosphatases inhibit the removal of phosphate groups, prolonging the signal and cellular responses.
• D. Phosphatases add phosphate groups, enhancing the signal and prolonging cellular responses.

Answer: (A)