M: What are you studying in college? ,F: My major is computer science. ,M: Is it difficult to learn computer science? ,F: No, it's a piece of cake, I think.
(A) M: I didn’t hear you. Please could you tell me again? (B) M: Why do you think computer science is difficult? (C) M: Computer science is really easy. (D) M: Oh, your major is international trade.
C