microeconomics

You operate a car detailing business with a fixed amount of machinery (capital), but you have recently altered the number of workers that you employ per hour. Three employees can generate an average product of four cars per person in each hour, and five employees can generate an average product of 3 cars per person in each hour. What is the marginal product of labor as you increase the labor from three to five employees? Select one: O a. MP = -1 cars O b. MP = 3 cars O c. MP = 1.5 cars O d. MP = 15 cars O e. MP = 4 cars to answer this