【单选题】

Katherine: Linda! I haven' t seen you for ages. How are yonLinda: Fine. And youKatherine: Pretty good. How' s FrankLinda: Oh, don't you know We got divorced two years ago.Katherine:______
A．Oh, I am sorry.

B．What a pity !
C．It is really a problem.
D．Hope you' 11 be better.