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Can someone help me with question 17? Specifically, why is answer choice E incorrect? I see that B is correct due to the required distribution of Q,R, and S through the three cages. However, exhibiting two parakeets pairs together also seems to violate rule 2, namely that birds must be split by species and sex (puts T and W together).

Any thoughts?

Thanks!

Isn't this just the way? I wrestled over this question for a solid 20 minutes. Once I post the question, I figure it out.

For future reference: Rule 2 refers to cages, exempting the exhibited pairs from the rule.

D'oh.