• Solve the linear programming model formulation in Problem 9 for the fitter by using the computer. a. If the fitter can obtain additional hours either to cutter or grinder (but not both), which should he select? How much? Explain your answer. b. Identify the sensitive ranges for the objective function coefficients and for the constraint quantity values. Then explain the sensitivity range for the demand for the products. c. What is the impact of optimal solution if the demand is reduced to 45?