During SITOR (NBDP) ARQ operations through a coast station, what should the GMDSS operator do during the "Automatic Exchange of Answerbacks"?

Question

Accepted Answer

Do nothing other than wait for a GA+? prompt and then issue the desired command.

Answer

Send a "WRU" then a "Here is" when requested to do so by the coast station.

Answer

Send the necessary message file and then wait for time and charges.

Answer

Wait for the coast station to transmit a menu of possible commands and select the desired action.

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