【单选题】
A Ship-to shore and shore-to-ship message transfer and distress alerting, and be capable of receiving EGC messages.
B Ship-to-shore and shore-to-ship message transfer and receiving EGC messages, but is not capable of distress alerting.
C ship-to-shore and shore-to-ship message transfer and distress alerting, but is not capable of receiving EGC messages.
D Distress alerting and receiving EGC messages, but is not capable of ship-to-shore and shore-to-ship message transfer.
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