Question Pool -- Category T4A

Why would there be an interlock switch in a high-voltage power supply to turn off the power if its cabinet is opened?
A.
To keep dangerous RF radiation from leaking out through an open cabinet
B.
To keep dangerous RF radiation from coming in through an open cabinet
C.
To turn the power supply off when it is not being used
D.
To keep anyone opening the cabinet from getting shocked by dangerous high voltages

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