li ming is the only one of the students __such a prize?

题目

li ming is the only one of the students __such a prize?
A that has won
B who has won
选哪个 为啥子 （ 先行词前有the only；the very修饰时关系词不是该用that吗？但是先行词时one时关系词用who，这不矛盾吗？）

答案

B who has won
先行词是the only one时,只能用who引导
问题补充：选哪个 为啥子 谢了 （ 先行词前有the only；the very修饰时关系词不是该用that吗?）
这是指先行词是物时,才这样的.但本题的先行词是人,要用who的.