An increase in the popularity of corn ethanol as a fuel increases the demand for corn around the world, causing the price to rise.

What is the reason behind the higher price?

A To meet higher demand, the industry relies more on less cost efficient producers of corn.

B Higher fixed costs incurred in order to meet demand end up increasing the cost of production.

C Corn ethanol's relative inefficiency as a fuel raises production costs for corn producers.

D The opportunity cost for supplying corn is higher than before.