A.D for sure,

来源: 于 2011-11-28 05:05:22 [旧帖] [给我悄悄话] 本文已被阅读：次

A+D= good sales. and happy shopping experience. It also depends on buyer's expectation,

if you want lowest price, then you may not care about A or B or C. I prefer paying a little bit more but get a good service.