I have to admit, I spent a couple of minutes reading and re-reading the possible answers, trying to figure some way it could possibly be something I was missing. There was no way this one could be "that simple". Finally decided to go with what I thought the first time, and it was, indeed, "that simple". (And got it right.)

First QotD I've even attempted in about a year, and only bothered because of the author. Good question, good explanations.

Jeff: Quick suggestion. The mentions of beer popsicles, dust bunnies, and flying pigs (porkchops) are fun, but they are inside jokes, and might obfuscate the otherwise great explanations to anyone not in on them.