TNGWD 23Q1-请教！！！

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, 我选了C？ A得比较结构平等吗？

choose a

have a effect on一个拥有环境和自然资源的国家，包括了中国、n国家和h国家

a逻辑意思表达清楚

即使不看逻辑句意，从语法也可以判断

xxx base of xxx，是单数，不能用those of