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: They retraced their steps slowly to the gate. Choices:  1. Slowly, they traced their own steps the way back to the gate. 2. They retraced their steps back to the gate to find his missing mailbox key. 3. They went on their way, having assumed their key was lost forever.

3