Technician a Says When Using an Electronic Wheel Balancer, Clean

Multiple Choice

Technician A says when using an electronic wheel balancer, clean all the mud from the wheel before attempting to balance the wheel and tire. Technician B says to leave all the old wheel weights on the wheel before attempting to balance the wheel and tire. Who is correct?

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