Last week, only two people came to look at the house,          wanted to buy it.   [      ]

A. none of them      

B. both of them      

C. none of whom    

D. neither of whom

判断一个企业有无商誉和商誉大小的标志为（）。

A.企业所处行业地位

B.企业市场占有率

C.是否拥有超额收益

D.是否拥有预期超额收益