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 Postal Service complied with this requirement early in 1973, and a Domestic Mail Classification Schedule recommended by the Commission became effective on July 6, 1976. Choices:  1. A Domestic Mail Classification Schedule became effective on July 6, 1976. 2. A Domestic Mail Classification Schedule became effective in the year 2000.   3. A Domestic Mail Classification Schedule was mandated by Congress.  

2