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: A boiler firing subbituminous coal and with only an ESP for particle collection and pollution control will require the most activated carbon consumption and the most steel for the ACI system. Choices: 1. An ACI system can be made with steel or copper. 2. The most activated carbon consumption is used by a boiler with only an ESP. 3. AN ESP particle collection system harnesses the power of extra sensory perception.

1