求教各位一道题咯。。。什么意思啊

bobchowz

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