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:   ANC represents the ability of a lake or stream to neutralize, or buffer, acid. Choices:  1. The ANC adds acid to water fountains. 2. ANC shows the ability to neutralize acid in certain water. 3. The ANC is important in how it shows the ability to get rid of lake and stream acid build up.

1