音乐类型与乐器相关词汇 — 英语选择题

阅读下面的『谜面式』描述，选出与之对应的英语词汇：It is a large wooden instrument with six strings. You don't hit it or use a bow; you use your fingers or a pick to play it. It is often used in pop and folk music. Which word is it? A. violin B. drums C. guitar D. piano