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: These studies suggest that the short-term risk can double when the single-day effects are combined with the cumulative impact of exposures over multiple days to weeks prior to a mortality event. Choices:  1. There were no conclusive results from the short-term studies. 2. The studies investigating the short-term risks were done by graduate students. 3. There were studies done to investigate the short-term risks.

1