Given the task definition and input, reply with output. 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.

M: Hi, Jane. What's so interesting? ,F: What? Oh, hi, Tom. I am reading an article on the societies of the Ice Age. ,M: The Ice Age. There weren't many societies then, just a bunch of cave people.
(A) F: I am afraid I did not quite catch what you were saying. Please repeat it. (B) F: Yeah, you're right. They lived in houses instead of caves. (C) F: Yeah, you're right. They lived in caves. There weren't many societies then. (D) F: Yeah, I know that you think they live in caves. But a new exhibit at the American Museum on Natural History shows that the Ice Age people were surprisingly advanced.
D