RE: Contest Director Questions
It's a matter of process of elimination. A through AAAA are in the regulations specifically. The regulations speak of Class B events with enough detail that you can eliminate it as a possiblity.
As I recall, there is absolutely NO definition for Class C AT ALL. ANYWHERE. C-Restricted is a Class C restricted to a group or club, so you're left with Class C as the only possible choice.
BTW, since the test was to see how well you could research the answers yourself, you just FAILED.
What sucks is, I filled out mine, triple-checked all the answers, verified them with other experienced contest directors, and STILL GOT ONE WRONG!