Definition: In this task, you're given a statement, and three sentences as choices. Your job is to determine which sentence clearly disagrees with the statement. Indicate your answer as '1', '2', or '3' corresponding to the choice number of the selected sentence.
Input: Statement: It can't be proved. Choices:  1. It can be proved with just a few hours of work. 2. It would be virtually impossible for anyone to come up with proof. 3. It can not be proved to be true.

1