下列化合物泻下作用最强的是

A．大黄素
B．大黄素葡萄糖苷
C．番泻苷A
D．大黄素龙胆双糖苷
E．大黄酸葡萄糖苷

The maneuverability of the ship is considered（）if the following criteria are complied with.

A.satisfactory

B.satisfactorily

C.smooth

D.smoothly