The "bulb failure" warning light of a vehicle is illuminated whenever the headlights are turned on. Technician A says this can be caused by an excessive voltage drop on the ground circuit of one of the park lights. Technician B says an incorrect bulb may be installed. Who is correct?

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


Answer: C

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