C -> Has to do with the guy in the cave and how he got stuck there.
D -> Pet the dog some more, maybe? ;)
Thanks :) I always found C pretty easy... People reported this bug a lot back when the game was released originally. I think the higher your framerate is, the easier it is to pull off.
I'd love to make more games, but I'm currently swamped with other projects after work. So, finding the time for that is really difficult.