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: Around 1200 b.c., Dorian invaders from the Balkans drove south through the Greek mainland, the Aegean islands, and across to Crete. Choices:  1. The Dorian invaders were stopped in the Balkans and proceeded no farther. 2. The Dorian invaders were responsible for an economic boom that lasted for more than a century. 3. Dorian invaders reached Crete around 1200 b.c. after passing through the Greek mainland.

1