if M is above N and O,and N is above O and below P,which one of the followin

问题描述:

if M is above N and O,and N is above O and below P,which one of the followin
A .M is not above.B.O is above N.C.P is above O.D.O is above P.

如果M在N 和O上面,N在O上面且在P下面,下面哪一个...
应该先C