Let's think step by step! One of the following sentences is nonsensical. Which one is it?
Options:
- Sentence A: "People sleep in bed."
- Sentence B: "People sleep on air conditioner."

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
People feel uncomfortable lying in the air conditioner. The answer: Sentence B.