Can we please discuss why the answer is C instead of A? :o boggles my mind. I checked out the manhattan prep forum for their explanations but i didn't like them.
From this link :) its the second to last questions. Thnx so much guys.
http://classic.7sage.com/lesson/necessary-assumptions-questions-problem-set-8
Also here:
http://classic.7sage.com/lsat_explanations/lsat-26-section-3-question-09/
answer choice B also attacks a premise