If the United States has a lower opportunity cost than Mexico in the production of wheat, then it will import wheat from Mexico.

In calculating gross domestic product, the Bureau of Economic Analysis uses the sum of the market value of final goods and services produced. This means that the BEA

A) values goods at their market prices, multiplies them by the quantity produced, and then adds them up. B) values goods and services at their market prices, multiplies them by the quantity produced, and then adds them up. C) simply counts the total number of goods produced in the market place and then adds them up. D) simply counts the total number of goods and services produced in the marketplace and then adds them up.

De Beers has a monopoly in the market for diamonds because they own a significant portion of the known diamond mines. One important source of challenge to De Beers' control of the diamond market is

a. the additional market supply from Russia, Australia, and Canada b. the emerging auction markets for diamonds in France and Spain c. the growing demand for diamonds in industrial uses d. that its South African mines are not producing as many diamonds as they did decades ago e. antitrust legislation in the United States