You will be given a definition of a task first, then some input of the task.
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.

F: Hi, Mr. Matthew. This is Susan Millers speaking from Chicago. Now we'd like to place an order with you. ,M: Oh, very glad to hear that. When can you send your purchase order? ,F: We will send it as soon as possible. We hope you can hurry on the order. ,M: No problem. But I'll have to check another purchase order, which is to be finished this Friday. Now I'm in Shanghai on business. Anyway, I'll let you know when I come back, and then we can sign a contract.
(A) F: No problem, now that you are visiting the manager in NY, we can sign the contract later. (B) F: I am really sorry, I did not catch that. Would you slow down, please? (C) F: Sure, we can have a online meeting after you finish your business trip in NY. (D) F: No problem, please contact me once you finish your business trip.
Output:
D