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: This analysis was revised when it was determined that the interim program, which began on January 1, 1995, would last 30 months rather than 18 months and there were changes in the estimated cost of deposit control testing and the addition, in the final rule, of a required deposit demonstration test to qualify test fuels for certification testing purposes. Choices: 1. The interim program's length changed due to unpredictable factors out of their control. 2. When it was determined that the interim program, which began on January 1, 1995, would last 30 months rather than 18 months, this analysis was revised. 3. This anaylsis was never revised, after confirming that the predictions were correct.

1