please help me with that questions.

Which of the following statements is true? Multiple Choice O Specialization will be complete among nations when opportunity costs increase as the nations produce more of a particular product. O Specialization will be less than complete among nations when opportunity costs increase as the nations produce more of a particular product. O Comparative advantage means that total world output will be greatest when each good is produced by the nation that has the highest domestic opportunity cost of producing it. O Comparative advantage means that a nation can gain from trade only if it has a lower labor productivity than its trading partner.Quantity Quantity Demanded Supplied Domestically Price Domestically 1, 400 $10 2, 200 1, 600 9 2,000 1, 800 8 1, 800 2,000 1, 600 2,200 6 1, 400 2, 400 5 1, 200 Refer to the accompanying table for a certain product's market in Econland. If Econland was open to international trade and the world price was $7, then Econland would Multiple Choice O import 400 units. O import 2,000 units. O export 400 units. O export 1,600 units.Country X Price Odd Qsd $15 200 400 12 250 350 9 300 300 350 250 3 400 200 The accompanying table gives data for Country X. Column 1 of the table is the price of a product. Column 2 is the quantity demanded domestically (Odd), and Column 3 is the quantity supplied domestically (Qsd). If Country X opens itself up to international trade, at what world price will it begin exporting some units of the product? Multiple Choice O any price below $9 O any price above $15 O any price above $9 O any price below $15