When can routine communications be resumed on a frequency or channel on which radio silence has been imposed?

A
After determining that the frequency or channel appears to be no longer in use
B
After determining that geographic distance from the distress situation will prohibit any other signal from interfering with emergency communications.
C
After the Rescue Coordination Center transmits a message on the frequency or channel being used for emergency communications stating that such traffic has concluded
D
Routine communications can resume if, in the Master's opinion, communications on that frequency or channel will not interfrere with emergency communications.
E