On the fully containerized ship，approximately one-third or more of the cargo is on deck above the rolling center. Top stowed containers are subject to（）.

A.provide the better working condition for stevedore and crew
B.take the advantage of cargo handling and keep a good maintenance of the vessel
C.standardize the size and package of the general cargo
D.reduce handling cost and damage of cargo and shorten the ship's turn round time in port

A.to prevent crushing of cargo
B.to separate cargoes
C.to prevent small containers from hanging up on the upper edges
D.to offer the drainage

A.The metacenter will move downward
B.The GM will increase
C.The center of buoyancy will move upward
D.The list of the vessel will become great