In Yunnan, the Tibetans mainly live in ___________ .
A、Diqing Tibetan Autonomous Prefecture
B、Lijiang, Lanping, Gongshan and other counties 
C、Yanyuan, Yanbian and Muli counties
D、Weixi, Zhongdian, Ninglang, Deqin, Yongsheng, Heqing, Jianchuan and Lanping counties