Technician a Says When Washing a Vehicle, Terry Cloth Towels

Technician A says when washing a vehicle, terry cloth towels easily pick dirt particles from the surface and then easily slough them off when rinsing them in water. Technician B says that the chamois or terry cloth towel should be dragged across the surface when using them to dry the surface rather than scrubbing with them. Who is correct?

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