M: My mobile keeps going wrong. I'd like to buy a new one. W: Don't you see the price keeps going down these days? I insist that we wait some time so that we can save more money. M: You have a point there, but it is inconvenient for me with this broken mobile. Sometimes it powers off by itself. It really makes me very angry when I am talking with someone. W: In that case,you'd better buy a new one. M: Well, I'll buy one this evening after supper. W: All right. M: Let's go to the shop together so that you can give me some advice., Question: What's wrong with the man's mobile phone? (A) It cannot be repaired. (B) It powers off by itself. (C) It's too old.
(B) It powers off by itself.