Definition: In this task, you are given an impractical statement. You are also given three reasons (associated with "A", "B", "C") explaining why this statement doesn't make sense. You must choose the most corresponding reason explaining why this statement doesn't make sense.
Input: Humans use carbon dioxide to breathe
(A) Oxygen is more important than carbon dioxide
(B)Breathing is the action of bringing in oxygen and flushing out carbon dioxide.
(C)Consuming a lot of carbon dioxide might kill you
Output:
B