As is known to all, _____ Olympic Games hosted in Beijing on 8th, August 2008 were _____ great success. [ ]

A. /; a

B. the; a

C. /; /

D. the; /

以下说法正确的是（）。

A．员工中小学学历人数占总数的25.3％

B．员工中高中学历人数占总数的28.1％

C．员工中大专学历人数占总数的20.2％

D．员工中初中和小学学历人数占总数的63.0%