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: The clumping of hobnailed boots on the gravel outside proclaimed the approach of Manning.  Choices:  1. Manning silently snuck up. 2. Manning's approach was signalled by boots on the gravel. 3. Manning wasn't able to approach silently.

1