单项选择题

Sam: What’s this Oh, it’s a pencil-box. Hi, Jim, is this your pencil-box
Jim: No, it isn’t.
Sam: Excuse me.
Ann: Yes
Sam: Is this your pencil-box
Ann: No it isn’t. I think it’s Lucy’s. Lucy, here is your pencil-box.
Lucy: Oh, thank you very much.
Sam: That’s all right.
Jim: Look! What are those
Lucy: I think they’re oranges.
Ann: No, they aren’t. They’re apples.
Jim: Are they in a box
Lucy: Yes, they are.
Sam: Whose(谁的) are they
Lucy: Sorry. I don’t know.
Are there bananas in the box ______.

A.Yes. There are
B.No. There aren’t
C.We don’t know