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: On the other hand, other economists have observed that strong consumer spending-boosted by low saving and the wealth effect discussed above-has fueled the surge in business investment and strong economic growth in the U.S. economy in recent years. Choices: 1. Business investment has been boosted by strong consumer spending. 2. The US economy has been struggling in recent years. 3. Some economists believe that a market bubble is forming.

3