In illustration D044NG below, what type of buoy is indicated by the letter A?

Correct Answer: Option C — can

A can buoy is a cylindrical, flat-topped buoy used in the lateral system to mark the port side of a channel when entering from seaward. In standard USCG buoyage illustrations, the can buoy is easily identified by its distinct, non-tapered, cylindrical shape compared to nun or spar buoys.