单选题In a narrow channel, a signal of intent which must be answered by the other vessel, is sounded by a vessel（）.Ameeting another head-onBcrossing the course of anotherCovertaking anotherDAny of the above
单选题
In a narrow channel, a signal of intent which must be answered by the other vessel, is sounded by a vessel（）.
A
meeting another head-on
B
crossing the course of another
C
overtaking another
D
Any of the above
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