M: Why didn't you come to my party last night? ,F: I'm sorry. I couldn't make it. I had to go to visit my grandmother at the hospital.
(A) M: It is ok. How was your grandma after you took her grandmother to hospital? (B) M: Is it your grandma ok? How long has she been there? (C) M: What? I have sent you the invitation. You can't miss it. (D) M: I am afraid I did not quite catch what you were saying. Please repeat it.
B