Let's think step by step! Choose the sentence that goes against common sense.
Options:
- Sentence A: "The sky is so blue today"
- Sentence B: "The sky is so green today"

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
The sky color can only be blue or black. The answer: Sentence B.