As used with non-timing relays, the NC control-relay contacts __________ on energization of the relay solenoid coil, and __________ on de-energization of the relay solenoid coil.
A) instantly-close; instantly-close
B) instantly-open; instantly-open
C) instantly-close; instantly-open
D) instantly-open; instantly-close
Share your understanding of this question with the correct explanation.