21D4 D
 The relay of DSC Distress alerts:
A. Was not originally an intended function of the GMDSS system but now is the preferred method to notify an RCC.
B. Remains the preferred method for passing Distress message traffic to an RCC or Coast Station.
C. Should always be done immediately to ensure a Coast Station receives the DSC Distress Alert.
D. Can quickly overburden the GMDSS systems in the vicinity with improperly transmitted or inappropriately relayed DSC calls.
