4. You are the officer of the watch (OOW) in poor visibility and plot another vessel on the
radar approaching your ship from your port bow so as to involve a close quarter situation. Which of
the followings is your most suitable action to avoid the risk of collision?
(A) Make an early and substantial alteration of course to starboard.
(B) Make an early and substantial alteration of course to port.
(C) Make a small increase of speed to pass ahead of the other vessel.
(D) Make a small reduction of speed to allow the other vessel to pass ahead of you.