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I'm not sure if this is against the rules, but I have two specific questions for those who have taken this test. Can someone help explain why answer choice D in the second LR section's number thirteen is wrong? Also, why is answer choice C impossible in question 23 of LG? If it's not kosher to talk about these things, perhaps a PM would do? Thanks for any and all help!

Regarding logic game question 23, June LSAT:

if W -> N
all of C2 must be included in C1
1 place only = plastic and/not glass

Result of answer C (which is wrong, it is A)

IF
Center 1 = W (and N by rule) (and T by rule)
Center 2 = N+T (because all of C2 must be contained in C1)
Center 3 = P or G (not both because that would violate the rules)

Therefore Center 2 would have to have N, T, and P/G.
That would force Center 1 to have WNT+P/G (which would make for 4 types of recycling at center 1, violating the game)

*Only reason I responded was because this is from JUNE 2007 LSAT that is publicly available on the Internet directly from LSAT free of charge. All their rights reserved of course.

So the three groups can't be 1: TNW 2: TN 3: PT? I'm confused because I didn't think that you needed to have all five types represented; usually if you do it says so, but it doesn't in the set-up.

Actually, it does require all five types:

Exactly five kinds of material are recycled at these recycling centers

Moral of the story, make sure you really proofread the rules. Honest mistake.

Thank you!