将房地产购买者分为本地购买者、省内购买者、其他省份购买者、中国港澳台购买者和国外购买者进行市场细分的依据是( )。

A．地理细分

B．人口细分

C．行为细分

D．心理细分

It's important _____ the violin well. [ ]

A. of him to play                        

B. for him to play    

C. of him playing                        

D. for him playing