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: It is time to revisit and update the Clean Air Act once again in order to achieve the additional reductions needed to address public health and environmental problems in the most cost effective manner. Choices:  1. The Clean Air Act does not require any updates at this time. 2. The Clean Air Act does not currently address environmental problems in the most optimal way. 3. The Clean Air Act would be improved by reducing carbon emission limits on motorcycles.

1