根据对话内容及方框中所给的句子补全对话，选项中有一项是多余选项。

(In the classroom)

A: What are you doing, Matt?

B: I'm looking for my USB flash drive (U盘)。

A:

B: Yes, Megan! Thanks! Mr. Dean needs my USB flash drive now, but I can't find it.

A: Let me help you… Oh, it's not on your desk.

B:

A: No, I can't find it under the desk.

B: No, I can't. It's not in it, either. Oh, no! Where can it be?

(Greg comes in)

C: Excuse me.

A&.B: Yes, we are!

C: I found one outside our classroom. Please look at it. Is it yours?

B: Yeah! It's mine.

C: You're welcome.

A. Have a nice day! B. Do you need help? C. Is it under the desk? D. Thank you very much. E. Can you find it in your schoolbag? F. Are you looking for a USB flash drive?