The point to which your vessel’s center of gravity (G) may rise and still permit the vessel to have positive stability is called the（）.

A.time
B.lever arm
C.displacement
D.angle of inclination

A.only when there is positive stability
B.only when there is negative stability
C.only when there is neutral stability
D.at all times

A.initial stability
B.free surface
C.stability at large angles of inclination
D.permeability