单选题An inconspicuous，partly submerged vessel or object being towed，where the length of tow is 100 meters，shall show（）.Ayellow lights at each endBtwo red lights in a vertical lineCa black ballDa diamond shape
单选题
An inconspicuous，partly submerged vessel or object being towed，where the length of tow is 100 meters，shall show（）.
A
yellow lights at each end
B
two red lights in a vertical line
C
a black ball
D
a diamond shape
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