单选题You hear the fog signal of another vessel forward of your beam.Risk of collision may exist.You MUST（）.AReduce speed to bare steeragewayBStop your enginesCBegin a radar plotDAll of the above
单选题
You hear the fog signal of another vessel forward of your beam.Risk of collision may exist.You MUST（）.
A
Reduce speed to bare steerageway
B
Stop your engines
C
Begin a radar plot
D
All of the above
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