The typical costume of Tibetan compatriots is Tibetan robe, and Tibetans often wear it from back to front. The main reasons for this phenomenon are

Tibetans wear only one sleeve in Tibetan robes, the left sleeve is empty, and the right sleeve is pulled from the back to the front and draped over the right shoulder. Instead of wearing the left sleeve in hot weather, pull the two sleeves to the front and tie them around your waist. This way of wearing has a long history and unique reasons. Tibetans live on the Qinghai-Tibet Plateau with high altitude and large temperature difference between day and night. Even within a day, there are often changes in rain, snow and sunshine. "Ten miles is different from the sky" is used to describe climate change. Tibetan robes are made of good materials and have a strong cold-proof effect. When the temperature rises, they can easily take off a sleeve to adjust the temperature, which is beneficial to life and travel. Tibetan robe has a big waist, which can be worn during the day to keep warm and cold, and can make the bed and sleep with clothes at night. In addition, they are also beneficial to labor production. Tibetans are grazing, working, farming and sleeping.

So choose: C.