根据对话内容，从所给选项中，选出最佳选项填入空白处。

Sam: Hello! This is Sam.

Ann: This is Ann speaking.

Sam: Ann, shall we go for a walk together?

Ann:  I'm busy now.

Sam:

Ann: I'm making apple pies.

Sam: Sounds nice!

Ann: Thank you. The pies will be ready in 20 minutes. Would you like to try my apple pies?

Sam:  Apple pies are my favourite, you know. I look forward to them!

Ann: Come now!

Sam: Great! See you soon.

A. What are you doing?

B. May I speak to Ann?

C. How old are you?

D. What's your name?

E. You are really good at cooking.

F. Yes. I'd like to.

G. Oh. I'm afraid I can't.