Write a multi-choice question for the following article, with the given choices and answer: Article: Rock singer Wu Tong says mixing musical styles is not only creative, it also shows that people can live together harmoniously. The track Linglong Tower was Wu's most popular piece when he performed in Tianjin, a city with a long tradition of quyi or narrative music. Honored as the "Shakespeare of the Asian," Cao Yu was one of the greatest playwrights of 20th-Century China. "Sunrise", Cao Yu's second play, was published in 1936. Following his first work "Thunderstorm," In 1937, the young playwright's third play, "The Wilderness," was released. In 1940, Cao Yu completed the writing of his fifth play, "Peking Man," A winner of the 2011 L'Oreal-UNESCO For Women in Science Awards, Professor Reng Yonghua says she could not have done it without the backing of her family. As a mother of two daughters, 12 and 14, Reng said she is lucky to have been supported by her family. Joan Chen, Gong Li, Zhang Ziyi - who's the next of their ilk? Most agree 24-year-old Liu Yifei is the likely contender to become an internationally Chinese actress.Born to a French-language professor and a dancer, Liu received training in dancing, singing and piano as a little girl. She moved to the United States at 10 and spent four years in New York City's Long Island. Wang Zhiming grew up in a family of instrument makers, but he is the only one who could actually play a violin.Wang, 51, has been making violins for more than 30 years. He grew up around violins and musical instruments. He is the third generation of instrument makers in his family, following his grandfather and father. , . Options: A 30 B 51 C 24 D 14 Answer: A 30 Question:
Answer:
Wang Zhiming has been making violins for more than _ years.