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: Depending on their respective objectives and features, contractual arrangements of this kind have been labeled contract rates, negotiated service agreements, or more recently, niche classifications. Choices:  1. Niche classifications are the oldest type of contractual arrangement. 2. Negotiated service agreements are a type of contractual arrangement. 3. Contract rates and negotiated service agreements have similar objectives and features.

1