Technician a Says That When Performing a Stall Test on an Allison

Multiple Choice

Technician A says that when performing a stall test on an Allison hydromechanical transmission he places selector in the DR position on a deep ratio model.Technician B says that on a four-speed hydromechanical Allison transmission a stall test can be safely performed with the selector in D2,D3 or D4 positions.Who is correct?

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