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: And, these environmental improvements cost less than predicted because of the built-in market based incentives. Choices: 1. People overestimated the effect of the upfront cost of making improvements to the environment. 2. The market based incentives that have been built into it are costing less. 3. The price of making the improvements to the environment was wildly underestimated.
3