---                          ?    --- They’re fine, thank you.

A. How are you                   B. Who are you

C. What are they                   D. How are your mother and father

 —____________? —They're fine, thank you.

A. How are you                      B. Who are they 

C. What are they                   D. How are your mother and father

---                           ?

--- They’re fine, thank you.