Of the following two sentences, which one is against common sense?
Options:
- Sentence A: "He put the food in the fridge to heat it up."
- Sentence B: "He put the food in the microwave to heat it up."
 Let's be accurate as possible. So think first.

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
Microwave heats things up but fridge cools things down.
The final answer: Sentence A.