Technician a Says That Front and Rear U-Joints on a RWD

Multiple Choice

Technician A says that front and rear U-joints on a RWD axle should operate at different angles to prevent vibration. Technician B says that front and rear U-joints on a RWD axle should operate at equal angles to prevent vibration. Which technician is correct?

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