Technician a Says That a Fault in the Cooling System

Technician A says that a fault in the cooling system can cause an increase in engine operating temperatures, and therefore cause a change in NO_x emissions. Technician B says that advanced ignition timing causes the spark to occur too soon while the piston is coming down on the compression stroke. Which technician is correct?

A) Technician A only
B) Technician B only
C) Both technicians A and B
D) Neither technician A nor B

Correct Answer:

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