Question: Which of these sentences doesn't make sense?
Options:
- Sentence A: "Her birthday is on February 29th, so she can't celebrate it every year"
- Sentence B: "Her birthday is on February 29th, so she has a birthday every year"

Please answer this question 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
We only have 29th February every four years. So the answer is Sentence B.