Since then the number of people who were addicted to smoking ________ 20%. [ ]

A.  has reduced to  

B.  reduces by

C.  has reduced by  

D.  have reduced by

证券公司信息公开披露制度要求所有证券公司实行（）披露。

A.基本信息公开

B.财务信息公开

C.基本信息公示和财务信息公开

D.所有内部信息公开