To organize the debate existed in the relevant research

A paper published online last year in Behavioral and Brain Sciences by José L. Duarte and his colleagues attempts to organize ……………. .
A. the debate existed in the relevant research
B. the research existing and relevant to the debate
C. the debate existing and the research being relevant
D. the existing research relevant to this debate (Answer)

Hi,
A and B look fine. May I know why A and B can not work?

Thank you.

I asked this question in WR forum. One native English speaker said:"(a) is wrong because the paper organizes research. It does not organize a debate."
"(b) is wrong because "research existing" puts the adjective after the noun. In English, adjectives go before nouns: a big box, a red car, or - as in (d) - existing research."

My first analysis for A:
I say to myself that A is correct because a paper can organize a debate: the debaters while having discussions use some papers with some writings and information on them. So, these papers help the debaters improve and organize the debate.

My second analysis for B:
And I say to myself that according to my red and blue explanation, B looks to work:
A paper published online last year in Behavioral and Brain Sciences by José L. Duarte and his colleagues attempts to organize the research (which exits) existing and (which is) relevant to the debate.


What's you opinion about my two analysis?

Thank you.