A spoon is too big to fit into the keyhole.
This justifies what answer for what question? Q & A:

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.
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One of the following sentences is nonsensical. Which one is it?
Options:
- Sentence A: "he opened his room door with spoon"
- Sentence B: "he opened his room door with key"

Sentence A