单选题You are approaching another vessel and will pass starboard to starboard without danger if no course changes are made.You should（）.Ahold course and sound a two blast whistle signalBhold course and sound no whistle signalCchange course to the right and sound one blastDhold course and sound two prolonged and two short blasts
单选题
You are approaching another vessel and will pass starboard to starboard without danger if no course changes are made.You should（）.
A
hold course and sound a two blast whistle signal
B
hold course and sound no whistle signal
C
change course to the right and sound one blast
D
hold course and sound two prolonged and two short blasts
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