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: The scenario A reference case assumes a business-as-usual characterization of technology development and deployment. Choices:  1. This assumption is necessary in order to create a realistic model. 2. No assumptions were made for scenario A reference case. 3. A business-as-usual assumption is made for scenario A reference case.

2