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: To some researchers, case studies are synonymous with methods of data collection deriving from anthropology, psychology, and sociology. Choices:  1. Some case studies very different from collecting data for psychology. 2. Some case studies are the same as collecting data for psychology. 3. Some case studies are the same as collecting data for psychology for social scientists.

1