Technician a Says Typically on Hydraulic Controlled Transmissions, Downshifting Was

Multiple Choice

Technician A says typically on hydraulic controlled transmissions, downshifting was often accomplished through the use of a kickdown valve. Technician B says in some transmissions, the kickdown valve was called a detent valve. Who is correct?

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