PT76.S4.Q22 - Wednesdays Kate usually buys some guava juice

ailish12c

I do not understand the difference between correct answer (A), and answer (D). The terms used in each of the answer choices are the same. I feel like I am missing something because I understand the structure of the argument, but the terms discussed in the video explanations do not make the distinction clear?

Thank you!!

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2ndTimestheCharm

This is the lame newish trend of making all of the parallel AC's about the same subject to get us all turned around. Sucks. But let me try to explain. The stim says:
W most (usually) BG (buys guava juice)-> (which can only come from) LHS (local health store)
Therefore, W some LHS (sometimes she goes to the health food store Wed.)

And A says:
CD (cafe dinners) most IMK (institute's main kitchen)-> (which can only come from) TCI (teachers)
Therefore, CD some TCI(sometimes the cafe dinners are made by the teachers)

D is wrong because it says:
TCI most IMK and CD-> (only if) IMK
So its conclusion is right, but the premises don't line up with the stim in the same order, the way they do in A.

Hope this helps!