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: Initially, I felt guilty about drugging rats and then killing them for the necessary dissection. Choices: 1. I no longer feel guilty about drugging and killing rats. 2. I still feel very guilty for killing and drugging rats. 3. I also drug, kill, and dissect other animals.

3