Grammar, Usage / I appreciate the insight that economics... take a second to comment this sentence [2]

Is this sentence all right? I have to submit the essay soon and have no one to ask for help. Basically, I just want to say that economics and analysis of institutions are cool and useful and want to be sure that I don't make any errors.

A. I appreciate the insight that economics and analysis of institutions can bring.
B.I appreciate the insight that economics and its analysis of institutions can bring.

Maybe I sould say:
C: I appreciate the insight that economics and its approach to the analysis of institutions can bring.
Or D: I appreciate the insight that economics can bring with its focus on analysis of institutions.

Thank you