从方框中选择最佳的句子补全对话，使对话内容完整、通顺。

A. No, she isn't. B. Good afternoon. C. He's my uncle. D. It's a picture of my family.       E. Who's this next to you?

David: Good afternoon, Jenny.

Jenny:

David: What's this?

Jenny:

David: A picture? Let me see.

Jenny: She's my sister.

David: Is that your sister, too?

Jenny:She's my cousin.

David: What about this one? Is that your father?

Jenny: No, he isn't.

David: Have a good family.