Technician a Says That the Apply and Hold Units Are

Technician A says that the apply and hold units are usually the same for first gear when the gear selector is in drive or manual first. Technician B says that a defective vacuum modulator could cause the automatic transmission to delay shifting until a higher-than-normal speed is achieved. Which technician is correct?

A) Technician A only
B) Technician B only
C) Both technicians A and B
D) Neither technician A nor B