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: Nails must be hammered into them, big ones. Choices:  1. You need to hammer small nails into them 2. You need to hammer big nails into them. 3. You need to hammer big nails into the roof.

1