5. There are 11 women and 9 men in a certain club.If the club is to select a committee of 2 women and 2 men, how many different such committees are possible?
A.120
B.720
C.1,060
D.1,520
E.1,980
ANSWER: E 我的算法是11*10*9*8=7920 是我的理解有误么,怎么算这道题 望各路牛的帮忙。。。 谢谢啦。。。