Which of the following statements is true according to this passage_______.
A、The name literally translated into "five colors", which really implied five kinds of colors.
B、Wucai was the combination of overglaze colors and underglaze Qinghua. 
C、Da-Ming Wucai had its roots in Fencai porcelain, which was a style of porcelain that had overglaze coloring within areas defined by Qinghua outlines.
D、The Qinghua Doucai porcelain of Jingdezhen had already been fully developed and gained a high reputation by the Chenghua period of the Ming Dynasty.