In the absence of a route leading from seaward，the conventional direction of buoyage generally follows（）.

A.the lantern panes of unattended lights may not become covered with ice or snow
B.the lantern panes of unattended lights may become covered with ice or snow
C.ice or snow is likely caused colored
D.the white lights are likely caused to appear colored

A.enter the traffic separation zone in an emergency
B.cross a traffic lane
C.engage in fishing in the separation zone
D.proceed in an inappropriate traffic lane

A.power-driven vessel following a traffic lane
B.pilot vessel enroute to a pilot station
C.law enforcement vessel
D.All of the above