While Discussing How to Test a Switch, Technician a Says

Multiple Choice

While discussing how to test a switch, Technician A says the action of the switch can be monitored by a voltmeter. Technician B says the continuity through the switch can be checked by measuring the resistance across the switch terminals using an ohmmeter. Who is correct?

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