BOTH INTERNATIONAL & INLAND You are underway in fog when you hear a signal of three strokes of a bell, a rapid ringing of the bell, and three more strokes of the bell. Which vessel is required to sound this signal?A) At anchor, greater than 100 meters

a) A vessel at anchor, less than 100 meters
b) A vessel aground
c) A vessel engaged in fishing
d) A vessel restricted in ability to maneuver