OK. You'll be given the following question. Please do chain-of-thought reasoning.
Which of the following sentences is nonsensical?
Options:
- Sentence A: "she made an error in her calculations because she checked it several times"
- Sentence B: "she made an error in her calculations because she checked it only once"

user
Checking calculations several times would make sure they were error-free.
Thus, the answer is Sentence A.
assistant