I used to live in a house,----grew a tall treein front of it in front of whichin the front of whichin front of that

Question

I used to live in a house,----grew a tall tree
in front of it
in front of which
in the front of which
in front of that

Answer 1

B````
in front of 和 in the front of 都是XXX的前面,而前者是外部的前面,后者是内部的前面(比如教室的前面是讲台)
而这里是非限制性定语从句```所以不能用THAT````是用which
IT不能引导定语从句```