Technician a Says That in a 6S/6M Highway Tractor ABS,two

Multiple Choice

Technician A says that in a 6S/6M highway tractor ABS,two modules are required to manage the system.Technician B says that a 6S/6M highway tractor ABS is required for most accident avoidance electronics.Who is correct?

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