Choose the sentence that goes against common sense.
Options:
- Sentence A: "We don't have to mute our mobile phones in the library."
- Sentence B: "We should mute our mobile phones in the library."
 Let's reason step by step:

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
Phone rings will disturb people who are concentrating on reading. Final answer: Sentence A.