[5-84]In restricted visibility a towed vessel must sound a fog signal when it is___被拖船当()时在能见度受限水域应鸣放雾号
A.
the last vessel in the tow是被拖带船组中的最后一艘
B.
the last vessel in the tow and it is carrying a crew是被拖带船组中的最后一艘且配有船员
C.
manned, regardless of her position in the tow配有船员,不管其在拖带船组中的位置
D.
None of the above are correct以上都错