I saw on TV that Watson was given three possible responses, i.e. multiple choice, from which Watson could further narrow it down using search capacities. Multiple choice for the computer player (but not the two human players) makes it very unfair.
It wasn't multiple choice. The three responses listed at the bottom were the responses Watson was working through. While I don't believe it was shown on television, there was some footage in some of the articles covering Watson of those answers changing as Watson "thought" about the answers. I'll try to dig them up, but I honestly don't recall which articles covered this, as I've read a number of them now. I find it pretty interesting. But even on the TV show (which I DVR'd) and just rewatched, it was not stated those were options Watson was given, but those were the answers Watson had narrowed it down to.