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 way to think of the above curves is to begin with a discount, go over to the supply curve to get a volume, and then go up to the postal service cost curve to see how much the postal service saved on the last few pieces that converted to presort. Choices:  1. The way to think about the curves above is to start with a discount. 2. The best way to consider the above curves is by avoiding a discount at all costs. 3. The discount needs to be properly analyzed to us it effectively.

2