Q: Which of the following two sentences does not make sense?
Options:
- Sentence A: "He turned on the light, then the house fall into darkness"
- Sentence B: "He turned off the light, then the house fall into darkness"

Let's solve this gradually.

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
Turning on the light implies that light fills the house, not darkness. The answer is Sentence A.