An increase in the US demand for British pounds causes

Well-defined and actively-enforced private property rights are necessary to the efficient operation of markets work because they prove that a person

a. owns what he or she is selling b. has the right to buy c. will make a profit d. will satisfy his or her wants

According to the U.S. Treasury,

A) creditors do not have to accept cash in payment of debts. B) U.S. dollars must be accepted as payment for any good or service sold in the United States. C) firms do not have to accept cash as payment for goods and services. D) the government will not accept cash in payment of taxes.