A、His length of military service. B、His age. C、His social status. D、His family name. C对话中提到的In the late nineteenth century,a per

W: Let’s stop in here for a minute. Jill told me this hat exhibit is really good. Hum, see what it says on the sign.
M: "A colourful parade of men’s headwears through the ages exploring the fashion’s historical, sociological, and psychological significance." OK, but we don’t have much time before lunch.
W: Well, let’s take a look at what there is.
M: This is interesting. Look at this sign, "Whether he was a soldier, sailor, merchant, or scholar, a man derived his sense of belonging from the hat of his occupation. In the late nineteenth century, a person’s status determined how elaborate his headwear would be."
W: That’s not like today. The only kind of hat I see guys wear anywhere is the baseball cap.
M: Not me. Here’s my personal favourite — the ten-gallon hat. When I visit my relatives on their ranch out west, they all wear cowboy hats like these. They’re stylish, and that broad brim really does protect you from the sun.
W: You’re jumping out of sequence. The exhibit starts back there with the Renaissance, and how it says here that they’re selling replications of all the hats in the museum store.
M: Why don’t we skip to that now? Then, after we meet Paul for lunch, we can all come back to the museum and start at the beginning. There’s an awful lot to see.
W: I know it looks like we’ll need at least an hour, maybe more, to get through it all.
Questions 13 to 15 are based on the conversation you have just heard.
13. What are the speakers doing?
14. How do the speakers get the information about hat exhibit?
15. According to the conversation, in the late nineteenth century, what could a man’s headwear reveal about him?