Write a multi-choice question for the following article: Article: Beijing Opera is my favourite. Bao Zheng always has a black face and Guan Yu has a red face in Beijing Opera. But many people don't know why. I come from America and I have lived in China for six years. I like Beijing Opera very much. I think Beijing Opera is very interesting. I can learn a lot about Chinese history. Now let me tell you the art of Beijing Opera facial paintings . In Beijing Opera facial paintings, different colours and patterns are for different roles. For example, a black face for fair people. A red face is for brave people. A white face is for bad people. Blue and green faces are for heroes . The gold face is for gods.
Question: The writer thinks he can learn a lot about _ by watching Beijing Opera.Options:A Chinese historyB American historyC different coloursD different patternsAnswer:A