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 source of balances for some trust revolving funds may not be predominantly exchange revenue. Choices:  1. The source of the balance for some trust revolving funds is always exchange revenue. 2. The source of balances for some trust revolving funds might not be mainly exchange revenue. 3. The source of balances for some trust revolving funds might not be mainly exchange revenue, as private corporations get funds from clients.

1