Definition: In this task, you're given a statement and three sentences as choices. Your job is to determine the neutral choice based on your inference from the statement and your commonsense knowledge. The neutral choice is a sentence that neither agrees nor disagrees with the statement. Indicate your answer as '1', '2', or '3', corresponding to the choice number of the selected sentence. If sentence X agrees with sentence Y, one's correctness follows from the other one. If sentence X disagrees with sentence Y, they can not be correct at the same time.
Input: Statement: He suggests that processing and transportation of mail do not seem to be characterized by scale economies, and that they could be provided by competing firms. Choices: 1. He claims that economies of scale do not apply to mail treatment. 2. He mentions that major economies of scale can be applied to the processing and transportation of mail. 3. When he says that economies of scale do not apply to mail treatment, he is excluding the use of machines.

3