Question 13 (6 points) Saved If a nation opens up to free trade and becomes an importer of goods, which of the following is then true? (:3. The nation as a whole loses. (\"3. Buyers lose. ('3) Sellers gain. (:3. The nation as a whole gains. Question 14 (6 points) Saved Which of the following is true of trade barrier? {"3 It lowers prices for domestic consumers and increases social surplus. .f'\") It lowers prices for domestic consumers and also reduces social surplus. {'3} It increases prices for domestic consumers and lowers social surplus. (m) It increases prices for domestic consumers and also increases social surplus. Question 15 (4 points) For the society, it matters who owns the property right in private bargaining when solving externality problems. If\") True False Question 16 (4 points) A Pigouvian tax should be set equal to the marginal external cost at the optimal quantity in the market. (A) True If\") False Question 17 (4 points) Free trade is beneficial for everyone in the importing countries. () True False Question 18 (4 points) Government intervention will always decrease social surplus in markets. '1: True I: a) False