All else equal, a decrease in the supply of labor will shift the labor supply curve to the left and decrease the equilibrium wage

Which of the following pairs is the most likely to exhibit an inverse relationship?

a. The amount of time you study and your grade point average. b. People's annual income and their expenditure on personal computers. c. Baseball players' salaries and their batting averages. d. The price of a concert and the number of tickets people purchase.

Assume that firms in an oligopoly are currently colluding to set price and output to maximize total industry profit. If the government forces the oligopolists to stop colluding, the price charged by the oligopolies will ________ and the total output produced will ________.

A. decrease; increase B. increase; increase C. decrease; decrease D. increase; decrease