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: Commercial companies insist that technology be mature at the outset of a product development program and, therefore, separate technology development from product development. Choices: 1. Commercial companies put product development and technology development in one box. 2. Commercial companies do not begin product development until the technology development is finished. 3. Commercial companies differentiate between technology development and product development.

2