The demand for apples in the United States is Upper Q Subscript US Baseline equals 800 minus 20 Upper P​, and foreign demand for apples is Upper Q Subscript Upper F Baseline equals 1200 minus 40 Upper P​, where quantity demanded is measured in millions of bushels and price is in dollars per bushel. The world demand for apples is therefore A. Upper Q equals 400 plus 20 Upper P for all prices.. B. Upper Q equals 400 minus 20 Upper P when P is​ $20 or less. C. Upper Q equals 2000 minus 20 Upper P when P is​ $30 or less. D. Upper Q equals 2000 minus 60 Upper P when P is​ $30 or less. Your answer is correct. The world supply of apples is Upper Q Subscript Upper S Baseline equals 200 plus 30 Upper P. ​ Therefore, the world equilibrium price for apples is ​$ nothing per bushel and the equilibrium quantity of apples is nothing million bushels. ​(Enter your responses as​ integers.)