问nn一题，请指教

kikiqi

Socially and environmentally responsible investing is on the rise:  last year in the United States, over $2 trillion was invested in funds that screen companies according to a variety of criteria such as adherence to labor standards, protection of the environment, and observance of human rights.

 

1. according to a variety of criteria such as
2. according to a variety of such criteria, as by
3. according to such a variety of criteria as by
4. in accordance with such a variety of criteria as

5. in accordance with a variety of criteria, such as by

Answer:d

我知道答案的d对，但是a为什么不对阿 ？