A sailing vessel is proceeding along a narrow channel and can safely navigate ONLY inside the channel.The sailing vessel approaches a vessel engaged in fishing in the narrow channel.Which statement is TRUE？

A sailing vessel is proceeding along a narrow channel and can safely navigate ONLY inside the channel.The sailing vessel approaches a vessel engaged in fishing in the narrow channel.Which statement is TRUE？
A.Each vessel should move to the edge of the channel on her port side
B.The vessels are required to exchange signals
C.The fishing vessel is directed not to impede the passage of the sailing vessel
D.Each vessel should be displaying signals for a vessel constrained by her draft
正确答案：The fishing vessel is directed not to impede the passage of the sailing vessel