读一读，选择合适的选项补全对话

A. It's a cake. B. How old are you? C. Nice to meet you, too. D. Can I have a cake, please. E. You're welcome.

Chen Xue: Hello, Li Ming. This is my brother Chen Dong.

Li Ming: Nice to meet you, Chen Dong.

Chen Dong:

Li Ming:

Chen Dong: I'm nine years old.

Li Ming: What's this?

Chen Dong:

Li Ming:

Chen Dong: Sure. Here you are.

Li Ming: Thank you.

Chen Dong: