The owner of an older pickup says the truck has begun to "wander and shimmy" in the past few months, especially when the bed of the truck is empty. Technician A says the twin I-beam front suspension caster is probably out of spec. Technician B says the eyes of the rear leaf springs are probably worn. Who is correct?
a. A only
b. B only
c. Both A and B
d. Neither A nor B