Sometimes a tropical storm moves so slowly that a vessel，if astern of it，can（）it.

A.go
B.proceed
C.move
D.remove

A.you can stop within your visibility range
B.the vessel is not subject to vibrations
C.you are traveling slower than surrounding vessels
D.you can take proper and effective action to avoid collision

A.the vessel will anchor at eastern anchorage and take supply at the western anchorage
B.the vessel will anchor at western anchorage and take supply at the eastern anchorage
C.the vessel will anchor at eastern anchorage and take supply there
D.the vessel will anchor at western anchorage and take supply there