听一段材料，回答下面几个小题。
What are the speakers talking about?
A．Buying a car．
B．Choosing a gift．
C．Using a computer．
What’s the relationship between the two speakers?
A．Husband and wife．
B．Professor and student．
C．Salesman and customer．
What do we know about the person mentioned by speakers?
A．Maybe he likes something expensive．
B．He is surely over sixty years old．
C．He must be fond of learning．