The accompanying figure shows the demand curve for a product that can be sold only in whole-number amounts.At a price of $25 per unit, what would be the total consumer surplus in this market each day?

A country possesses a comparative advantage in the production of a product if

A) the opportunity cost, in terms of the amount of other products that it gives up to produce this product, is lower than it is for its trading partners. B) it possesses an absolute advantage in the production of this good compared to its trading partners. C) it is able to produce less of this good per worker than its trading partners. D) it can produce more of this good per hour than its trading partners.

Which of the following is not correct?

a. Gross domestic product is both total income in an economy and total expenditures on the economy's output of goods and services. b. In a closed economy net exports are zero. c. National saving is the sum of private saving and public saving. d. Purchases of capital goods are excluded from GDP.