A、He knows her from their elementary school science class. B、She know his from computer science class. C、They went to the same h

M: Hi Carol, do you have the notes from Mr. White’s history class last Monday?
W: Yes, don’t worry, you can borrow my notes. I actually went to the class, unlike you !
Q: What does the man ask?

M: Annie, who’s that new girl in your dormitory? I’m sure I recognize her from some where, have I met her before?
W: Of course! She’s my sister Amy, you used to be in the same English class at high school,
Q: What can be inferred from this conversation?