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Which of the following statements is TRUE regarding automatic identification systems (AIS) ? （）
A:AIS may be used to make passing arrangements via ship-to-ship text messaging thus relieving a vessel operator from sounding whistle signals or making contact via radiotelephone
B:AIS may be used to make passing arrangements via ship-to-ship text messaging but a vessel operator is still required to sound whistle signals unless the arrangement is made via radiotelephone
C:AIS cannot be used to make passing arrangements because the system does not have the ability to communicate from ship-to-ship in this manner
D:AIS cannot be used to make passing arrangements because the use of the ship-to-ship text messaging feature in this way is prohibited

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出自：海船船员证

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