Which of the following is not a determinant of supply?

The "monopoly issue" is concerned with the fact that

(a) monopolies will "charge what the traffic will bear" in order to maximize their profits. (b) monopolies will attempt to increase their profits by discriminating among their customers and charge prices that they are willing to pay, instead of charging one price. (c) monopolies will be able to charge higher prices and earn higher rates of return than competitive firms. (d) all of the above apply.

The short-run Phillips curve portrays a(n):

a. direct relationship between total employment and the inflation rate b. inverse relationship between inflation and total employment. c. direct relationship between the unemployment rate and the inflation rate. d. inverse relationship between the unemployment rate and the inflation rate. e. inverse relationship between the price level and the unemployment rate.