The terrestrial system of GMDSS consists of（）.<br>A:radio-telephony, DSC, Direct Printing Telegraphy,Navtex and SART<br>B:INMARSAT, DSC, Direct Printing Telegraphy, Navtex and SART<br>C:radio-telephony,DSC,EPLRB,Navtex and SART<br>D:Status Recording system,DSC,Direct Printing Telegraphy, Navtex and SART

The terrestrial system of GMDSS consists of（）.
A:radio-telephony, DSC, Direct Printing Telegraphy,Navtex and SART
B:INMARSAT, DSC, Direct Printing Telegraphy, Navtex and SART
C:radio-telephony,DSC,EPLRB,Navtex and SART
D:Status Recording system,DSC,Direct Printing Telegraphy, Navtex and SART

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