PT49.S2.Q7 - Any fruit that is inspected is also rotten

cqas190517

Any fruit that is infected is also rotten. No fruit that was inspected is infected. Therefore, any fruit that was inspected is safe to eat.
The conclusion of the argument follows logically if which one of the following is assumed?

I put A, but the credited answer is E. Can someone tell me why, please? Thanks!

Admin note: edited title and added link
https://7sage.com/lsat_explanations/lsat-49-section-2-question-07/

BinghamtonDave

the sentence with "rotten" is a red herring. there is no way to use it to move from what we know to what we are trying to prove.

In the domain of fruits:

Inspected---->Infected

Inspected--->Safe to eat

This is valid argument form #3 that we are "building" with our SA.
Premise: A---->B
Conclusion: A---->C
SA: B--->C
Final argument: A--->B---->C

Infected----->Safe to eat

A few tips for these questions:
-the contrapostive is ALWAYS fair game
-the presence of the red herring
-terms that sound the same "infected/inspected"
-The logical operator for (E) starts in the middle of the answer choice: "any"