You are underway in reduced visibility.You hear the fog signal of another vessel about 20° on your starboard bow.Risk of collision may exist.You should().
A:alter course to starboard to pass around the other vessel
B:reduce your speed to bare steerageway
C:slow your engines and let the other vessel pass ahead of you
D:alter course to port to pass the other vessel on its portside
出自:海船船员证