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: Ceteris paribus, less efficient postal services do not have greater scale economies than more efficient ones. Choices:  1. Scale economies are correlated with more efficient postal service operations. 2. Scale economies certainly have no effect on efficiency. 3. The marginal benefits of increasing scale economies drop off rapidly at the high end.

2