The figure shows the market for helicopters in the United States, where Dis the domestic demand curve and S is the domestic supply curve. Assume the world price of helicopters is currently $ 32 million per helicopter. 44 40 .... Price (millions of dollars per helicopter) ..... 20 16 12 0 120 240 360 480 600 720 840 960 Quantity (helicopters per year) a. Will the United States be an importer or an exporter of helicopters? b. How many helicopters will the United States produce at the current world price? c. How many helicopters will US consumers purchase at the current world price? d. How many helicopters will be imported or exported by the US at the current world price