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 addition, they recognized that staff expertise had to be frequently updated to keep abreast of ongoing changes in threats, vulnerabilities, software, security techniques, and security monitoring tools. Choices: 1. Staff expertise needed to be updated on a weekly basis when it came to ongoing changes in threats. 2. Staff expertise needed to be frequently updated in the area of vulnerabilities and security monitoring tools. 3. They recognized that staff expertise didn't need to be frequently updated.

1