Technician a Says That Rear Geartrains Are Used on Engines

Technician A says that rear geartrains are used on engines because they operate with less noise. Technician B says that rear geartrains are used because they have less wear than a front geartrain mechanism. Who is correct?

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