Which action should the GMDSS radio operator take in a distress situation when embarking in survival craft?

A
Switch on EPIRB and SART immediately and leave on.
B
Switch on EPIRB and SART manually prior to launching and remain aboard vessel in distress.
C
Notify RCC (Rescue Coordination Center) through VHF DSC with portable equipment.
D
Communicate via Inmarsat-C from the survival craft.
E