Definition: In this task, you're given a statement and three sentences as choices. Your job is to determine which sentence can be inferred from the statement. Incorrect choices change the meaning in important ways or have details that are not mentioned in the statement. Indicate your answer as 1,2, or 3 corresponding to the choice number of the selected sentence.
Input: Statement: They wouldn't be able to keep the mines secret very long, but the longer the better. Choices:  1. They wouldn't be able to keep the mines a secret for very long because the enemy was getting closer. 2. They should have no problem keeping the mines a secret. 3. They wouldn't be able to keep the mines a secret for very long.

3