Technician A says VVT (variable valve timing)engines use a cam phaser that advances or retards the camshaft as the engine is running. Technician B says VVT engines use a third cam lobe with increased lift and duration, operating a third rocker arm that is coupled to the two primary rocker arms by a hydraulically controlled pin, while the engine is running. Who is correct?
A)A only
B)B only
C)both A and B
D)neither A nor B

Question

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The Answer of Technician A says VVT (variable valve timing)engines use a cam phaser that advances or retards the camshaft as the engine is running. Technician B says VVT engines use a third cam lobe with increased lift and duration, operating a third rocker arm that is coupled to the two primary rocker arms by a hydraulically controlled pin, while the engine is running. Who is correct?
A)A only
B)B only
C)both A and B
D)neither A nor B

Technician a Says VVT (Variable Valve Timing)engines Use a Cam