单选题A tug may be in danger of tripping when（）.Atowed sideways by an overwhelming force on the towlineBher tow moves parallel to and forward on either side of the tugCthe tow is no longer directly astern but moves up on her quarterDAll of the above
单选题
A tug may be in danger of tripping when（）.
A
towed sideways by an overwhelming force on the towline
B
her tow moves parallel to and forward on either side of the tug
C
the tow is no longer directly astern but moves up on her quarter
D
All of the above
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