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: The acropolis was built on a set of terraces. Choices:  1. The set of terraces have never been built on before. 2. The acropolis had been built on some terraces. 3. The acropolis was not always built on the terraces.

1