Given the task definition and input, reply with output. 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.

Statement: In case studies, the data coming in are analyzed as they become available, and the emerging results are used to shape the next set of observations. Choices: 1. Examining the data is an important step in determining all future observations. 2. The results of the data are promptly discarded. 3. The results of the data are used to shape the next observations.
2