W: There are so many people in your house. What are they doing? M: We are having a party. I am the host and my wife is the hostess. W: Are they your guests? M: Yes, they are. They are all my friends. W: Who is that man? M: He is Professor Zhang. He is a Chinese teacher. His wife is a teacher, too. Their daughter is a college student. W: Who is that young man? M: He is her boyfriend. He is a young doctor. His name is Karl Black., Question: Who is Karl Black? (A) He is the man's daughter's boyfriend. (B) He is the woman's daughter's boyfriend. (C) He is Miss Zhang's boyfriend.
(C) He is Miss Zhang's boyfriend.