If your vessel has a list to port due to negative GM and off-center weight， the first corrective measure you should take is to（）

A.move port-side， main-deck Cargo to the starboard side

B.fill the starboard double-bottom

C.pump water from the port double-bottom to starboard double-bottom

D.pump water from the port double-bottom over the side

正确答案：fill the starboard double-bottom