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: Each packet seeks the cheapest route, at the instant it is sent, to the destination. Choices:  1. The cheapest route is found in each packet. 2. Each packet seeks the most expensive route. 3. Each packet costs approximately 20 dollars.

2