Technician a Says That a Torque Converter Is a Type

Multiple Choice

Technician A says that a torque converter is a type of fluid coupling.Technician B says that because a torque converter makes no direct mechanical connection between the engine and transmission,some loss of torque output results when the unit is not in lock-up mode.Who is correct?

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