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: 1: Key Assumptions of the Economic Model Choices:  1. Number one - the key assumptions of the economic model.  2. There are multiple assumptions in the economic model. 3. Key facts of the economic model.

3