This is a hard question. Start by listing the CDs that aren’t in:
- New jazz
- New pop
- New rap
We know new soul is in (thanks to the local rule), and we already knew that new opera is not in.
Your next question should be: do any of these variables cause anything to happen on your own?
Yes. If new pop is out, then at least one type of jazz has to be in. Since new jazz can’t be in for this question, used jazz must be in.
A is CORRECT. Note that this answer is a double negative. Used jazz “cannot not” be for sale.
B is wrong because there are no rules that affect used opera.
C is wrong because used rap not being on sale is not a sufficient condition for anything:
It comes only at the end, as a necessary condition.
D and E are wrong. If doesn’t matter whether used soul is for sale or not.
If used soul is in, both types of rap are out, as per the second diagram above. We already knew new rap was out, and it doesn’t matter if used rap is out.
If used soul is out, new pop is out, as per the first diagram above. But we already knew that happened.
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