Technician a Says That If All the Sensors and Components

Technician A says that if all the sensors and components of the aftertreatment system are removed, the OBD-II system will not be able to detect faults in the absence of electrical signals. Technician B says that the comprehensive component monitor (CCM) will set emission-related fault codes. Who is correct?

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