Figure 9-21 The Following Diagram Shows the Domestic Demand and Domestic Supply

Multiple Choice

Figure 9-21
The following diagram shows the domestic demand and domestic supply for a market.In addition,assume that the world price in this market is $40 per unit.
-Refer to Figure 9-21.With free trade,the domestic price and domestic quantity demanded are

A) $30 and 1,200.
B) $40 and 800.
C) $30 and 800.
D) $40 and 1,600.