--You see any foreigner present at the party?--She was the only

--You see any foreigner present at the party?
--She was the only foreigner__________I saw at the party.
A、whom
B、that
C、who
D、which
【正确答案】：B
【题目解析】：这道题考查定语从句的用法。当先行词被the only修饰时，关系代词只能用that。