See question below:
One of the following sentences is nonsensical. Which one is it?
Options:
- Sentence A: "If your heartbeat stops then you are classed as dead."
- Sentence B: "You are still alive if you do not have a heartbeat."

Reason slowly and give your answer.

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
Your heartbeat is what keeps you alive and breathing by transporting blood so without it you are dead.
The final answer: Sentence B.