单项选择题
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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