How are normal working conditions restored on a narrow band direct printing (NBDP) frequency on which radio silence had been imposed?

Correct Answer: Option A — The RCC that imposed the radio silence must transmit a NBDP message stating "SILENCE FINI".

Under USCG National Maritime Center examination standards, the accepted correct answer is: The RCC that imposed the radio silence must transmit a NBDP message stating "SILENCE FINI"..