Let's think step by step! One of the following sentences is nonsensical. Which one is it?
Options:
- Sentence A: "There are a lot of living creatures in the tropics"
- Sentence B: "There are not a lot of living creatures in the tropics"

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
The tropics has a lot of living diverse creatures. The answer: Sentence B.