2 (Figure: Market for Engines) The figure shows the domestic market for engines. According to the figure, if there is international trade in this market, and the world price of engines is $1,000, the quantity demanded is _____, and domestic suppliers will sell _____ units to domestic consumers. Supply and demand graph with engines on the horizontal axis and price on the vertical axis. There is a ten by ten grid on the graph, with quantity five hundred marked at the fifth gridline and quantity one thousand at the tenth gridline. Price one thousand is marked at the fifth gridline and price two thousand marked at the tenth gridline. The domestic supply curve and the domestic demand curve intersect at quantity six hundred and price six hundred. The demand curve has endpoints at quantity zero and price one thousand nine hundred and at quantity nine hundred and price zero. The supply curve has endpoints at quantity zero and price zero and at quantity one thousand and price one thousand. Both are straight lines. a. 400; 400 b. 400; 600 c. 600; 400 d. 600; 600