请教GWD-23-Q1

So-called green taxes, which exact a price for the use of polluting or nonrenewable fuels, are having a positive effect on the environmental and natural resource base of countries as varied as
            China, the Netherlands, and Hungary.

A.      as varied as

B.       as varied as are

C.      as varied as those of

D.      that are as varied as

E.       that are varied as are

答案是A.

请问整句话的意思是?为什么不选C呢？

多谢！！

zai wen

多谢，补充点点,在PREP详解看到的：

A as varied as B，A和B要平行

在这里，varied后置定语修饰countries,所以划线部分是国家和国家的平行。

我之前理解错误，和tax找平行了。。。。