How will the following events affect the demand for money? In each case, specify whether there is a shift of the demand curve or a movement along the demand curve and its direction.
a.) There is a fall int eh interest rate from 12% to 10%.
b.) Thanksgiving arrives and, with it, the beginning of the holiday shopping season.
c.) McDonald's and other fast-food restaurants begin to accept credit cards.
d.) The fed engages in an open-market purchase of U.S. Treasury bills.