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: Cross-tabulations of events can identify interactions and check the developing story more formally. Choices:  1. There is no way to figure out where any interactions are located. 2. Cross tabulations must be done in all studies. 3. Cross tabbing can point out counter-indications.

1