In 2011,a Country Produces 2 Bushels of Wheat,each Selling for $5.In

In 2011,a country produces 2 bushels of wheat,each selling for $5.In 2012,the country also produces 2 bushels of wheat,but each bushel sells for $10.Which of the following is true?

A) Real GDP did not change between 2011 and 2012
B) Real GDP doubled between 2011 and 2012
C) GDP did not change between 2011 and 2012
D) GDP increased by 50% between 2011 and 2012
E) None of the above is true