Teacher: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.
Teacher: Now, understand the problem? Solve this instance: Statement: After the break-up of the Mauryan empire, new invaders appeared on the northwest frontier. Choices: 1. The Mauryan empire continued to exist, easily repelling invaders on its frontier. 2. Invaders popped up on the frontier after the empire's dissolution. 3. The new invaders were hoping to capitalize on the division and confusion inside the former empire.
Student:
1