The difference between Ge and Lou lies in （）.

A.Ge is taller than Lou.

B.Ge is a storeyed building.

C.Ge has a door and windows only on the front side, with all the other sides being walls.

D.Ge is used for sightseeing.

正确答案：Ge has a door and windows only on the front side, with all the other sides being walls.