Figure 9-4.The Domestic Country Is Nicaragua

Figure 9-4.The domestic country is Nicaragua.
-Refer to Figure 9-4.Which of the following statements is accurate?

A) Consumer surplus with trade is $3,200.
B) Producer surplus with trade is $375.
C) The gains from trade amount to $800.
D) The gains from trade are represented on the graph by the area bounded by the points (0,$12) , (300,$12) , (300,$7) and (0,$7) .