I can't find Mr.Smith.Where did you meet him this morning?

I can't find Mr.Smith.Where did you meet him this morning?It was in the hotel _____[A.that B.which]he stayed.选A的理由:It was...that是一句强调句,原句为:He stayed in the hotel.选B的理由:which引导定语从句修饰hotel究竟应该选择哪一个?为什么?B选项抄错了，应该是where ,就是可以引导定语从句的那个词.原题中有三个选项,而which在原题中是B选项,被我排除了,所以抄到电脑上B选项应该是where