下述哪种最易引起肾盂肾炎（）

A.膀胱炎

B.外伤

C.口腔气管炎症

D.皮肤感染

E.鼻窦炎

Several theories of evolution had historically preceded that of Charles Darwin, although he expounded upon the stages of development.

A．found fault with

B．explained in detail

C．outlined briefly

D．offered in published form