109 INLAND ONLY You are navigating in a narrow channel and must remain in the channel for safe operation. Another vessel is crossing the channel ahead of you from your starboard. You are doubtful of intention of the crossing vessel. You MUST __________.

A. stop your vessel, since the other vessel has the right of way
B. sound the danger signal
C. contact him on the radiotelephone to make a passing agreement
D. stop your engines until you have slowed to bare steerageway