大全537，which means为什么不对

1.     Not all employment selection mechanisms that have a “disparate effect,” that is, that screens out a percentage of minorities or women disproportionate to their presence in the relevant labor market, are unlawful.

(A) that is, that screens out a percentage of minorities or women disproportionate to

(B) which means, that screens out a percentage of minorities or women disproportionate with

(C) which means, that screen out a percentage of minorities or women disproportionate with

(D) that is, that screen out a percentage of minorities or women disproportionate to（D）

(E) that is, that screens out a percentage of minorities or women disproportionate with

我查阅了旧帖，明白THAT IS 是插入语，但是，为什么不可以用which means呢？这二者的用法有什么不同？

如果B改成 which means, that screen out a percentage of mnorities or women disproportionate to

是不是也对呢？ 谢谢。

同问：为什么不可以用which means呢？这二者的用法有什么不同？

先谢了！！

If I am not wrong, "which means" has to be followed by a complete sentence.

"that screen out ..." is only a clause.

Hence, D is correct and B is still wrong even if you change it your way.

佷多时候,which means 与that is, 意思相同,但是which means 须跟that 宾与从句，而在这个句字中，　所跟that 为一主与从句的引导次，that ....are unlawful. 因此，如要用which means, should be this way:

which means, that that screen out a percentage of minorities or women disproportionate with...

请教~