Write a multi-choice question for the following article, with the given choices and answer: Article: China's New Voice Three months ago,Liang Bo was just a student who was studying music in the college. Now he becomes " The Voice of China". The lucky young man is the winner of The Voice of China, the most popular TV show this summer. People think Liang's voice is natural, clear and touching. The 21-year-old boy was born in Changchun, Jilin. Like many other young Chinese, he fell in love with music by playing the guitar. Liang got his first guitar as a birthday gift when he was in middle school. He spent days and nights practicing. " I can't live without my guitar."He said. Many people think Liang Bo is just like famous Chinese rock singers such as Xu Wei, Wang Feng and Zheng Jun. But the young man doesn't want to stand in others' shadow ." I like them, but I'm not going to copy them. I will be who I am." he said. Options: A natural B clear C touching D A,B and C Answer: D A,B and C Question:
People think his voice is _ .