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 objective was for sources to find the most cost-effective means for limiting SO2 emissions and to be responsible for achieving those emission reductions. Choices:  1. They are trying to find the most cost-effective way to increase SO2 emissions.  2. They are trying to find the most cost-effective way to limit SO2 emissions from vehicles. 3. They are trying to find the most cost-effective way to limit SO2 emissions. 

1