M: Hello, Daisy. Are you sure that Thompson is in hospital? W: Yes. His sister Fiona told me that. She is going to the hospital to see him. M: Do you think I can go with her? W: I don't know. Why not ask her yourself?, Question: Who is Fiona? (A) The woman speaker. (B) Thompson's sister. (C) Daisy's sister.
(B) Thompson's sister.