Technician a Says That the ECPC Valves Used on Caterpillar

Multiple Choice

Technician A says that the ECPC valves used on Caterpillar CX transmissions are PWM controlled.Technician B says that Caterpillar CX transmission hydraulic troubleshooting is facilitated by pressure taps located at key points in the hydraulic circuit Who is correct?

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