The demand for apples in the United States is Qus = 800 -20P, and foreign demand for apples is QF = 1200 -40P, where quantity demanded is measured in millions of bushels and price is in dollars per bushel. The world demand for apples is therefore O A. Q =2000 - 20P when P is $30 or less. O B. Q = 400 + 20P for all prices.. O C. Q =2000 - 60P when P is $30 or less. O D. Q= 400 - 20P when P is $20 or less. The world supply of apples is Qs = 200+ 30P. Therefore, the world equilibrium price for apples is $ per bushel and the equilibrium quantity of apples is million bushels. (Enter your responses as integers.) At the equilibrium price, million bushels will be sold in the U.S., and million bushels will be sold in foreign markets. (Enter your responses as integers.)