Kind of shocked he didn't point out the obvious trap in B, using the same example in answer an conclusion

Was I the only one who did not consider that Tannisch could've taken it? My thought was that the thief simply only touched the diamond, which still led to the right answer because only A matched in form at all.

How do you find your graduating class gpa? I can't seem to find anything close.

These are odd, they're very easy to hunt for until I actually read the answers. I know which part of the argument they are, but the answers are often written so oddly that choosing the right one takes longer than it should.