Technician a Says That Most Manufacture's Use Stand-Alone Electrical Systems

Multiple Choice

Technician A says that most manufacture's use stand-alone electrical systems. Technician B says that in a networked system a fault in one component may cause several symptoms. Who is correct?

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