Technician a Says That a Line Pressure Sensor Is Supplied

Technician A says that a line pressure sensor is supplied a reference voltage from the PCM power supply relay. Technician B says that the line pressure sensor varies the voltage and sends the signal to the PCM. Who is correct?

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