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: Some are short, some are tall, but a few are just the right height for sitting on. Choices:  1. They are all the same size, which means they may not be the right size for you to sit on. 2. Some are smaller and some larger, but some are the perfect height for sitting. 3. Some are taller than others, but some are the right height for sitting on

1