单项选择题

A.you should make an ample change to port for a vessel ……

What is TRUE when operating in fog and other vessels are detected by radar?（）

A.you should make an ample change to port for a vessel crossing on the starboard bow
B.You should maneuver in ample time if a close-quarters situation is developing
C.You should determine the course and speed of all radar contacts at six minutes intervals
D.Long-range scanning will provide early warning of all other vessels within the radar’s range

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