单选题A pilot vessel may continue to sound an identity signal if she is （）.Aunderway，but not making wayBagroundCbeing towedDnot engaged in pilotage duty
单选题
A pilot vessel may continue to sound an identity signal if she is （）.
A
underway，but not making way
B
aground
C
being towed
D
not engaged in pilotage duty
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