Technician A says that CAN L (-) and (chassis) ground are of equal voltage potential. Technician B says that modules networked to a J1939 bus are designed to identify the difference between CAN H (+) and CAN L (-) in message packet without reference to chassis ground. Who is correct?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A nor B
Answer: B
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