GMAT Critical Reasoning (CR) | Medical research findings are customarily not made public prior to

oh, not again, I just thought C is right, until i realize that the public and findings has nothing to do with findings and peer review. Too many details bump into head while reading even though I take paraphrase the whole passage!!!

Guideline to negate unless statement.
The negation of a conditional statement is NOT another conditional statement. When negating a conditional, you're really negating the relationship expressed between the two properties from the original statement. So A-->B negated
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