选择题________ of his friends has（have） ever been to Paris．

选择题________ of his friends has（have） ever been to Paris．
________ of his friends has（have） ever been to Paris．
选项
A.None
B.No one
C.Every
D.Nobody
实在对不起，我没搞懂，以及每一个选项。外送25分给聪明的你！C选项呢？为什么？