A Technician Is Testing a Circuit That Uses a Ground-Controlled

A technician is testing a circuit that uses a ground-controlled relay to provide power to the circuit load. With the relay installed in its socket, the control terminal of the relay is grounded by a jumper wire; nothing happens. Technician A says check the coil input terminal for voltage. Technician B says connect a jumper wire between battery negative and the output terminal of the relay to check if the load is the problem. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B