Technician A says that installing a thermostat with a lower temperature rating will help an engine run cooler in hot weather. Technician B says that a stuck-closed thermostat can cause a computer-controlled fuel system to run rich when the engine is cold. Who is right?

A. ?Technician A only
B. ?Technician B only
C. ?Both A and B
D. ?Neither A nor B


Answer: D

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