单选题A vessel shall slacken her speed，stop，or reverse her engines，if necessary，to（）.Aavoid collisionBallow more time to assess the situationCbe stopped in an appropriate distanceDAll of the above
单选题
A vessel shall slacken her speed，stop，or reverse her engines，if necessary，to（）.
A
avoid collision
B
allow more time to assess the situation
C
be stopped in an appropriate distance
D
All of the above
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