《内经》说“诸湿肿满，皆属于脾”是基于

A．脾运化水谷

B．脾运化水液

C．脾为后天之本

D．脾主升清

Part of the reason Charles Dickens loved his own novel，David Copperfield，was ________ it was rather closely modeled on his own life.(2010·北京)

A．what

B．that

C．why

D．whether