Definition: In this task, you're given a statement, and three sentences as choices. Your job is to determine which sentence clearly disagrees with the statement. Indicate your answer as '1', '2', or '3' corresponding to the choice number of the selected sentence.
Input: Statement: They demonstrated the effects of earlier availability, lower costs, and/or higher efficiencies for more advanced equipment than the reference case. Choices:  1. Their demonstration proved only to increase costs and reduce efficiency. 2. The costs demonstrated were lower, but by a small margin only. 3. Lower costs, better availability, and high efficiency was demonstrated by them.

1