Whatever the world’s governments decide to do about climate change, one thing seems certain: the value of carbon is going to rise. Government and industry are beginning to invest in technologies to capture carbon from their smokestacks (大烟囱),and entrepreneurs are beginning to figure out ways to recycle it. One of them is Carbon Sciences, a Santa Barbara, California, firm that says it has found an efficient way of turning carbon dioxide and water into methanol, a type of fuel that racing cars now use instead of gasoline. (Although the fuel would produce carbon when it’s burned, its net effect would be neutral, says the company, because carbon was used in producing it.) What is methanol according to the passage
A. It is a kind of waste that cars emit. B. It is a kind of naturally-produced fuel. C. It is a kind of fuel that racing cars use. D. It is a kind of fuel from smokestacks.