Come up with a question and reasoning that would justify this answer: Sentence 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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The question is: Of the following two sentences, which one is against common sense?
Options:
- Sentence A: "He ironed his food to warm it up."
- Sentence B: "He microwaved his food to warm it up."

Step-by-step reasoning process: An iron is used for getting wrinkles out of clothes and a microwave is used for heating up food.
