Question: Which of the following sentences is nonsensical?
Options:
- Sentence A: "Petrol is often used as a fuel"
- Sentence B: "Water is often used as a fuel"

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
Engines and other such motorized equipment requiring a catalyst don't operate on water. So the answer is Sentence B.