They turn on their TV set to sit ___ them instead watching o

They turn on their TV set to sit ___ them instead watching other sports games
A.in front of B.in the front of
为什么啊?

A
in front 这个物表示在某个物的前面~
in the front表示这个东西在某个物里面的前部分~这个物体属于后者里面~
比如说我在电视机前用IN FRONT OF
如果我在房间里面的话 就是IN THE FRONT OF THE HOUSE~