Question. Which of these sentences doesn't make sense?
Options:
- Sentence A: "He was fishing in the lake"
- Sentence B: "He was fishing in the ladder"

Answer. Sentence B
What step-by-step reasoning justifies that 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
Reasoning: You can only go fishing in a body of water.