阅读对话，判断句子正误。
Assistant: Can I help you, Miss White?
Miss White: Yes. I want a pair of sandals, please.
Assistant: What size?
Miss White: Size ten .
Assistant: How about this pair? They are black. They are good.
Miss White: How much are they?
Assistant: They are 160 yuan.
Miss White: Oh. They are too expensive.
Assistant: These brown sneakers are cheaper. They're 30 yuan.
Miss White: OK. I will take them.
