Task: Dialogue Generation
Input (English): M: What's the matter with Jane? She has been sitting there for hours. ,F: A letter from her mother made her fell homesick.
(A) M: Why is Jane worried about her mother? Her mother didn't send her a letter. (B) M: Excuse me, could you repeat the question? (C) M: Yeah, she must miss her home very much. (D) M: You mean since Jane hasn't received her mother's letter, so she is very worried, isn't she?
Output (English): C