单选题There is a vessel in position 120.0E 24.5N on course 120 degrees and speed 12.5 knots（）is not complying with traffic regulations.AthisBwhoCwhichDit
单选题
There is a vessel in position 120.0E 24.5N on course 120 degrees and speed 12.5 knots（）is not complying with traffic regulations.
A
this
B
who
C
which
D
it
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