Definition: In this task, you're given a statement and three sentences as choices. Your job is to determine which sentence can be inferred from the statement. Incorrect choices change the meaning in important ways or have details that are not mentioned in the statement. Indicate your answer as 1,2, or 3 corresponding to the choice number of the selected sentence.
Input: Statement: Well, I suppose the atmosphere is oxygen and nitrogen, mostly; then there's the ionosphere and the ozone layer. Choices:  1. The atmosphere also has some carbon dioxide in it. 2. The atmosphere is mostly comprised of oxygen and nitrogen; above that is the ionosphere and the ozone layer. 3. The atmosphere is made entirely of helium.

2