The following traditional houses and their corresponding distribution areas are incorrect: () A. White-walled houses-Sahara Desert B. Flat-topped houses-Tarim Basin.

The climate in the Sahara desert is hot and dry all the year round, and white-walled houses can reflect sunlight; There is little precipitation in Tarim basin, so all the houses are flat-roofed. Cave dwellings are mainly distributed on the Loess Plateau in northern China. According to the uprightness of loess, local residents dug caves which are warm in winter and cool in summer and suitable for living. Mongolian yurts in the Inner Mongolia Plateau are easy to disassemble and meet the needs of nomadic residents.

So choose: C.