Read and choose.(选出下列句子正确的答语。)

Who's that?                                                         A. They are pandas.

Is Sam at home?                                                 B. No, she doesn't.

What's your favourite colour?                            C. Yes, he is.

Does your mum go to work on Saturdays?       D. It's Tom.

What are they?                                                   E. Blue.