Answer:
B. corn is used in the production of chicken and the higher price of corn has decreased the supply of chicken
Step-by-step explanation:
Since corn is often what is fed to chikens in order to make them grow, the higher demand on corn for the production of ethanol has made the corn price to go up and with that the cost of production of the chikens has also gone up, this is the correlation that exists between the increased demand of ethanol and the elevation in the cost of chiken.