请通读下面对话，根据对话内容，从文后的选项中选出能填入空白处的最佳选项。选项中有一项为多余选项。

Henry: Hello! Is that Amy?

Amy: Hello! Who's calling, please?

Henry: This is Henry speaking.

Amy: Oh, at the moment, I'm in Yangshuo, Guilin Guangxi.

Henry:

Amy: About 1, 436 square kilometers. It is a magic land of mountains, forests and rivers.

Henry: What did you do there?

Amy: I took a lot of photos and I'll show them to you after I go back home.

Henry: Really?

A. How large is it?

B I went along the Lijiang River by boat and enjoyed the beautiful sights.

C. Thank you.

D. This is Amy.

E. Where are you at the moment?

F. It's a beautiful place.