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: West Communications, although we did not conduct comprehensive case studies at These entities. Choices:  1. Comprehensive case studies were not conducted. 2. Studies were conducted. 3. It was a mistake.

2