Task: Dialogue Generation
Input (English): M: Hasn't it been hard for you without your sister and brother, mom? ,F: Yes, Sam, of course. We haven't seen each other for a long time. ,M: Mom, I have a surprise for you. I'll go on a business trip to Russia. I want you to come with me. You can meet them finally. ,F: No, Sam. It's very thoughtful of you, but I'm too old and sick to travel so far.
(A) M: Really? You don't think you are old and sick to travel? And you refuse my invitation because you haven't prepared for the trip? (B) M: OK, I see. You refuse my invitation because you are unsuitable for such a trip and you think you are too old and sick to travel so far. (C) M: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (D) M: Really? You think you are not sick to travel but you refuse my invitation because you prefer to travel with your sister?
Output (English): B