People have the belief factories should produce fewer things from raw materials, the sup

People have the belief factories should produce fewer things from raw materials, the supply is growing smaller and smaller.
A. which; that
B. that; of which
C. that; whose
D. which; whose

A. which; that(答案→)B. that; of whichC. that; whoseD. which; whose解析：第一空that引导同位语从句，解释说明the belief的内容；第二空which引导非限制性定语从句，构成the supply of which的结构，which指代上交的raw materials（原材料）。句意：人们相信工厂应该更少的从原材料中生产出东西，因为原材料的供应正变得越来越少。

这个答案应该是对的