Technician a Says Steering Effort Imbalance on a Power Rack

Multiple Choice

Technician A says steering effort imbalance on a power rack and pinion steering gear may be caused by worn rings on the rotary valve. Technician B says when turning the steering wheel to the right or left, low power steering assist may be caused by worn rings on the rotary valve. Who is correct?

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