Let's think step by step! One of the following sentences is nonsensical. Which one is it?
Options:
- Sentence A: "We must follow the guidelines when we operate the machine for the first time."
- Sentence B: "We should tamper with the machine by ourselves when we operate it for the first time."


user
It is easy to damage a new machine if we tamper with it by ourselves. The answer: Sentence B.
assistant