Other things equal, a tariff is

A) superior to an import quota for Americans because a tariff increases the profits of foreign producers.
B) inferior to an import quota for Americans because a tariff increases the profits of domestic producers.
C) superior to an import quota for Americans because a tariff generates revenue for the U.S. Treasury.
D) inferior to an import quota for Americans because a tariff generates revenue for the U.S. Treasury.

The higher the rate of interest:

A) the larger the present value of a future sum of money.
B) the smaller the future value of an amount invested today.
C) the smaller the present value of a future sum of money.
D) All of the above