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 octagonal construction provides the interior with seven exedrae, or recesses, the eighth being the choir and apse. Choices:  1. One of the recesses is a choir and apse. 2. The original design was for hexagonal construction. 3. The construction means there are six exedrae in the interior.

3