Tech a Says That the PCM Uses the Brake Switch

Multiple Choice

Tech A says that the PCM uses the brake switch information to hold the transmission in gear during braking, no shifts allowed. Tech B says that when troubleshooting an ECT sensor, using a paper clip to jump the connector will help determine if the problem is the sensor or the wiring.
Who is correct?

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