Potala Palace, included on UNESCO's World Heritage list in 2000, is ( ).
A.
the highest ancient palace in the world, reaching 3,767.19m at the topmost point.
B.
composed of 2 parts, the Red Palace and the White Palace as the center.
C.
said to be built by King Songtsen Gampo for Princess Wen Cheng of the Han Dynasty.
D.
a grand building complex now rebuilt in the Tang and Qing Dynasty.