单项选择题
A.metacenter
B.geometric center of the waterplane area
C.center of gravity
D.center of flotation
单项选择题 Stability is determined principally by the location of the center of gravity and the（）.
单项选择题 Stability is determined principally by the location of the point of application of two forces: the downward-acting gravity force and the（）.
单项选择题 Stability is determined by the relationship of the center of gravity and the（）.