Refer to the above figure. S1 is the supply curve that includes only private costs. S2 is the supply curve that includes social costs. The free market rate of output is ________ and the corrected, socially optimal amount of output is ________

A country's net welfare will increase when it imposes a tariff on a foreign monopolist if its:

a. terms-of-trade gain is greater than its increase in tariff revenues. b. terms-of-trade gain is less than its increase in tariff revenues. c. terms-of-trade gain is greater than its lost consumer surplus. d. increase in tariff revenues is greater than its lost consumer surplus.

Refer to the table above. If the world price of trousers is $8 per pair, then which of the following statements is true?

A) Country B, Country C, and Country D will export trousers, whereas Country A will import trousers. B) Country A, Country C, and Country D will import trousers, whereas Country B will export trousers. C) Only Country B will import trousers, whereas Country A, Country C, and Country D will export trousers. D) All countries will import trousers.