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Technician A says that verifying power to a component is best done with a test light, inserting it into the end of the component's unplugged connector on the harness side. Technician B says that the best way to verify power is to perform a voltage drop test on the power side of the circuit with the component plugged in and turned on. Who is correct?

Technician A

Technician B

Both A and B
Neither A nor B