When and where to build the new factory _____. [ ]

A. is not decided

B. are not decided

C. has not decided

D. have not decided

（）指对进出口贸易中与人类生命健康密切相关的肉、蛋、奶制品、水果等商品进行的检验。

A.残损检验

B.卫生检验

C.包装检验

D.动植物检疫