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: Our simulations using a longterm economic growth model show that, even assuming the United States could maintain national saving constant at its 2000 share of GDP, future incomes would fall short of the rise in living standards enjoyed by prior generations whose income generally doubled every 35 years (see figures Choices: 1. If national savings rated decrease, future incomes will also increase. 2. Simulations show that future living standards will not be equal to those of the past. 3. Longterm economic growth shows income doubling only twice in a hundred years.

3