Of the below sentences, which one does *not* make sense?
Options:
- Sentence A: "Comrades, said the commander, the war has begun"
- Sentence B: "Comrades, said the commander, we are going to have an eight-year warfare"
 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
No one knows how long a war will last.
The final answer: Sentence B.