List three typical test measurements you would perform to verify a sensor input module is functioning.

• A. Verify supply voltage presence, verify correct input state on actuation, and measure load current/voltage along the input path.
• B. Verify supply voltage presence, verify correct input state on actuation, and measure enclosure temperature.
• C. Verify supply voltage presence, verify correct input state on actuation, and check isolation levels.
• D. Verify supply voltage presence, verify correct input state on actuation, and inspect the enclosure for dust.

Answer: (C)