A、She wants to borrow his notes and advises him to attend the lecture. B、She wants to borrow his notes and advises him to attend

W: Why is there a big sign on the back of your door that says "keys"?
M: It’s to remind me to take my keys when I go out because I’m always locking myself out by accident! It doesn’t help though. Now I just forget to read the sign.
Q: Why is there a sign on the back of the door?

M: Did you go to that Business Strategy lecture on Friday? I missed it and need to copy your notes.
W: I’d say you could borrow my notes, but Sarah’s got them. Be careful not to miss Professor Brown’s seminar, he takes attendance in that.
Q: What is the woman telling the man?