Area B indicates the net gain from trade in the importing country. Area A indicates the net gain from trade in the importing country. Area B indicates the producer surplus in the exporting country. Area A indicates the consumer surplus in the exporting country. Which of the following statements is true at a price of P1? P XS A P1 B MD Q a. P indicates price and Q indicates quantity. The figure below shows the export supply (XS) and import demand (MD) curve for rice. the net change in national welfare in the U.S. both countries gain from trade, but the Rest of the World gains more than the U.S. both countries gain from trade, but the U.S. nor the Rest of the World gain from trade. and the Rest of the World at a world price of per bushel: a. After the opening of free trade between the U.S. Suppose that under autarky, wheat costs per bushel in the U.S. If a country exports the good that it can produce at a low opportunity cost and imports those goods that it would otherwise produce at a high opportunity cost, we say that such trade is based on: a.