Technician a Says the Longitudinal Steel Bands in a Variable

Technician A says the longitudinal steel bands in a variable pulley diameter style continuously variable transmission (CVT) are used to hold the belt together and keep the steel plates lined up. Technician B says these bands hold the plates apart so there is a large gap maintained between each plate. Who is correct?

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