I'm quite confused about Q.16.

I thought B and C could be right answers too, but I am still not sure why they're wrong. And I don't get why E is a better answer.

(B) The first and second paragraphs talked about outcomes analysis (Zirkel and Schoenfeld were enthusiastic about and criticized traditional legal research by using it.) Besides, L 13~15 also talked about the two scholars. So that's why I thought C could be an answer too.

(C) Because of L 2~6, I thought C could be an answer too.

What's the differences among E (which is the right answer), B and C?

And why is E is a better answer than them?

Please someone enlighten me.

Thanks in advance!