From 2010 to 2012, Johnny Deer Exclusively Grew Corn

From 2010 to 2012, Johnny Deer exclusively grew corn. Under the Food, Conservation, and Energy Act of 2008, Deer

A) was required to grow corn in the next year in order to receive direct payments from the federal government.
B) was allowed to grow whatever crop he wanted in the next year, but would only receive direct payments from the federal government if the price of corn fell below a targeted price.
C) was eligible to receive countercyclical payments if the price of corn fell below a targeted price, even though he did not grow corn in the next year.
D) had to grow something other than corn the next year to qualify for direct payments from the federal government.