Two Technicians Are Discussing Electronically Controlled Automatic Transmissions

Two technicians are discussing electronically controlled automatic transmissions. Technician A says a digital multimeter (DMM) or digital volt ohm meter (DVOM) is used to aid in the diagnosis of wiring, switches, solenoids, sensors, and actuators. Technician B says you should follow the diagnostic step by step until you have completed the diagnostic procedure and found the cause of the diagnostic trouble code (DTC) . Who is correct?

A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B