BOTH INTERNATIONAL & INLAND You see a vessel's green sidelight bearing due east from you. The vessel might be heading __________.

Correct Answer: Option A — southwest (225°)

Under Inland Navigation Rules, for the condition where 'You see a vessel's green sidelight bearing due east from you. The vessel might be heading', the correct requirement is: 'southwest (225°)'. This standard ensures clear navigational intent and collision avoidance.