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: Could it be that I should be engaging in a more formal kind of exercise? Choices:  1. Informal exercises can often injure parts of my body. 2. I might need to do more formal exercises. 3. I do not wonder at all if I should do more formal kind of exercises.

3