390 BOTH INTERNATIONAL & INLAND A 200-meter vessel restricted in her ability to maneuver, at anchor, will sound a fog signal of __________.

A. a 5 second ringing of a bell forward and a 5 second sounding of a gong aft at intervals of 1 minute
B. one prolonged followed by two short blasts every 2 minutes
C. one prolonged followed by three short blasts every minute
D. one prolonged followed by three short blasts every 2 minutes