选择正确的选项，补全对话。

A. Happy birthday! B. I'm nine. C. Hello, Wang Hong. D. Thank you! E. How old are you, Jenny?

Wang Hong: Hello, Jenny.

Jenny:

It's my birthday today (今天).

Wang Hong: Oh!

Jenny: Thank you!

Wang Hong:

Jenny: Look! How many candles (蜡烛)?

Wang Hong: One, two, three… Oh, you're nine.

Jenny: Yes!

Wang Hong: This pen is for you.

Jenny :