Current Ethanol Production as a Fuel Does Not Significantly Reduce

Current ethanol production as a fuel does not significantly reduce greenhouse gas emissions because

A) of the amount of fossil fuels required to produce the corn used in the process.
B) the process of fermentation produces a tremendous amount of carbon dioxide.
C) the process of fermentation produces a tremendous amount of methane.
D) burning ethanol or gasoline contributes the same net amount of carbon dioxide in the atmosphere.