문제 내용: A: May I help you?
  B:I bought this dress two days ago, but it's a bit big for me.
  A:
선택지 1: I'm sorry, but there's no smaller size.
선택지 2: I feel like it fits you perfectly, though.
선택지 3: That dress sells really well in our store.
선택지 4: I'm sorry, but this purchase can't be refunded.