As the interest rate falls, the quantity supplied of money falls and the quantity demanded of money rises

If the world terms of trade equal those of country F, then

A) country H but not country F will gain from trade. B) country H and country F will both gain from trade. C) neither country H nor F will gain from trade. D) only the country whose government subsidizes its exports will gain. E) country F but not country H will gain from trade.

Suppose an industry is composed of 10 firms. Each firm's share of total sales in the industry is 10 percent. If two of the firms merge, then the four-firm concentration ratio in the industry is

A) 40 percent. B) 45 percent. C) 50 percent. D) unable to determine.