单项选择题
A vessel engaged in fishing must display a light in the direction of any gear that extends outward more than 150 meters. The color of this light is（）.
A.white B.green C.red D.yellow
单项选择题 A vessel engaged in fishing during the day would show（）.
单项选择题 A vessel enagaged in fishing，and at anchor，shall show（）.
单项选择题 A vessel crossing a river on the Western Rivers has the right of way over（）.
