Which of the following is not a contributing factor to unstable blood sugars in the neonate

A. Prematurity.
B. Respiratory distress.
C. Postdated infant.
D. Cesarean delivery.

除按规定分得本期固定股息外，还可以再参与本期剩余盈利分配的优先股，称为(　　)。

A．累积优先股

B．非参与优先股

C．参与优先股

D．非累积优先股