Because of the Relationship Among Ethanol Production, Sugar, and Corn

Because of the relationship among ethanol production, sugar, and corn, the authors of your text have concluded that:

A) the corn subsidy is a big problem for ethanol exports.
B) the sugar quota makes sugar so cheap in the United States that ethanol producers are using it instead of corn.
C) because of the sugar quota and its high price, there is a huge demand for less-environmentally-friendly corn as a substitute in food products and for ethanol.
D) there should be more intra-industry trade in ethanol.