Of the below sentences, which one does *not* make sense?
Options:
- Sentence A: "Old people are particularly vulnerable to the flu."
- Sentence B: "Young adults are particularly vulnerable to the flu."
 Let's be accurate as possible. So think first.

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
Young adults are stronger than old people, so they are less vulnerable to the flu.
The final answer: Sentence B.