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: The procedure used to develop these adjustment factors is described in more detail in the Heavy-Duty Engine/Diesel Fuel RIA (U.S. Choices: 1. There is more information on the procedures for developing these adjustment factors. 2. There are two documents that talk about the procedures used to develop these adjustment factors. 3. This is all the information there is for the procedure used to develop these adjustment factors.

2