Good, solid question, Ron. And on a subject that probably can use a bit more propaganda; I think many SQL Server people still don't really know what APPLY is and how it works. And it's good to see the "1" in the question name; I have a feeling that I already know what I can expect in the follow-up question.

My only (minor) gripe is the order in which the answer options are presented. Why not simply order them (lowest to highest or highest to lowest) instead of this random order?