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

Correct Answer: Option B — Do nothing other than wait for a GA+? prompt.

During the automatic exchange of answerbacks, the ship and shore terminals perform a handshake to verify identity. The operator must remain passive during this automated process. Any manual intervention or keyboard entry during this sequence can disrupt the synchronization, causing the system to fail or the coast station to drop the connection.