Technician a Says That When Back-Probing an Electrical Connector with a T-Pin

Multiple Choice

Technician A says that when back-probing an electrical connector with a T-pin, it is permissible to poke the T-pin through the wire as long as you do it carefully. Technician B says that it is permissible to back-probe an electrical connector on a 42-volt system as well as on a 14-volt system. Who is correct?

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