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: Given that the emissions reductions under the Clear Skies Act result primarily in reduced ambient concentrations of PM2. Choices:  1. There haven't been any emission reductions thus far. 2. The clear skies act made a huge difference in air quality.  3. The emission reductions reduced ambient concentrations.

1