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 auditor should also review previous studies or audits of the acquisition project and of the agency's information resources management functions. Choices: 1. Previous studies should be reviewed by the auditor. 2. The review of the studies by the auditor should cover all parts of the study. 3. The auditor doesn't need to check any previous studies.

2