For the record, I voted "other" as "D&D" for me is a highly house-ruled AD&D1e with AD&D2e THAC0 instead of attack matrices, multi-classing restrictions lifted, no weapon speed modifiers, etc. I actually prefer OD&D and BD&D, but this hybrid system is what I cut my teeth on, so it's what I tend to associate "D&D" with in terms of actual play.