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: In 1954, some experimental psychologists randomly divided 24 sixth-grade boys into two groups and took them to Robbers Cave State Park, Okla., for summer camp. Choices: 1. The psychologists made two groups with 12 boys in each group. 2. The psychologists divided the 24 boys according to their height. 3. The 24 boys were the top students in their class.

3