根据对话内容，从方框中选出合适的句子，填在对话空缺处，使对话内容完整、连贯。

A: Hello, Joan!

B: Hello, Jack! How are you?

A:

B: Hey, Jack.

A: It's a key.

B:

A: K-E-Y, key.

B: What color is it?

A:

B: Is this your key?

A:

A. What's this in English? B. Yes, it is. C. It's yellow. D. I'm fine, thanks. E. Spell it, please.