脂肪成分的获得主要来自（　　）

A．豆类、肉类、奶类制品

B．猪、牛、羊的油、花生油、豆油

C．粮食作物、豆类、植物的根茎

D．蔬菜、水果及植物种子

He called on another girl, __________ was more suitable for the job.

A．he believed

B．who he believed

C．he believed she

D．whom he believed