Chain-of-thought: Skinny people can also be in first class.

Question: Of the below sentences, which one does *not* make sense?
Options:
- Sentence A: "First-class airline seats are for the fat"
- Sentence B: "First-class airline seats are for the rich"

Answer: Sentence A

Explanation for the following question's answer: Every year, my brother gets one year older.
Question: Of the below sentences, which one does *not* make sense?
Options:
- Sentence A: "A year after my brother turned 20, he turned 21."
- Sentence B: "A year after my brother turned 40, he turned 21."

Answer: Sentence B

Chain-of-thought: The drivers are striking, so there would be no one to drive.
--
Question: Of the below sentences, which one does *not* make sense?
Options:
- Sentence A: "The metro started service because of the metro driver's strike"
- Sentence B: "The metro stopped service because of the metro driver's strike"

Answer: Sentence A

Chain-of-thought: Books are not made of glass because they would be very fragile and heavy.

Question: Of the below sentences, which one does *not* make sense?
Options:
- Sentence A: "books are made of glass"
- Sentence B: "books are made of paper"

Answer: Sentence A

Explanation for the following question's answer: Diamonds are not used to provide insulation for jackets.
Question: Pick which sentence is not logical.
Options:
- Sentence A: "Diamonds  in the down jacket"
- Sentence B: "Duck feather in the down jacket"

Answer: Sentence A

Explanation for the following question's answer: A knife is used for cutting purpose not for brushing our teeth.

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
Question: Which of the following sentences is nonsensical?
Options:
- Sentence A: "I brush my teeth with a knife"
- Sentence B: "I brush my teeth with a toothbrush"

Answer: Sentence A