Definition: In this task you are given a small conversation between two persons and 4 options on how the conversation should continue. Your job is to choose the most reasonable option. The conversation and the options are separated by a newline character. Each dialogue in the conversation are separated by a comma. F and M indicate female and male, respectively.
Input: M: Jenny, thank you for your help with my paper. ,F: It's my pleasure if I have done something helpful to you. ,M: I am really grateful for the reference books you offered me. But for the materials, I would not have written my paper so quickly. ,F: It's nice of you to say so. I am interested in your paper and I happen to have some books on the topic. ,M: Your books are important to me. Besides, you have given me some very good suggestions. I really thank you so much. ,F: You are welcome.
(A) M: Many thanks. I won't be able to finish my new novel without your kind help. (B) M: You must know how grateful I am toward your help. (C) M: I really want to know why you refused to help me. (D) M: I am afraid I did not quite catch what you were saying. Please repeat it.

B