About Daniel Defoe, which one of the following statement is true?

A、InDefoe’swriting,hisinterestislargelywiththeworkingclass.;
B、Defoeisajournalistandpamphleteer,aswellasawriter.;
C、Defoe’sstyleischaracterizedbyaplain,smoothandalmostcolloquiallanguage.;
D、InDefoe’swriting,hisfocusisonupperclass.