Figure 9-24 the Following Diagram Shows the Domestic Demand and Supply in Supply

Multiple Choice

Figure 9-24
The following diagram shows the domestic demand and supply in a market.Assume that the world price in this market is $20 per unit.
-Refer to Figure 9-24.With free trade,consumer surplus is

A) $400 and producer surplus is $100.
B) $400 and producer surplus is $400.
C) $900 and producer surplus is $100.
D) $900 and producer surplus is $400.