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a. (10 points). The MPC Inc. company manufactures 2 family products. The company begins its roll-up forecast anticipating a need for 200X1 units and 350X2 units at a cost of $1,000 per unit and $800 per unit, respectively. In addition, they anticipate a need for 150Y1 units and 110Y2 units at a cost of $1,800 per unit and $600 per unit respectively. Complete the roll-up pyramid forecasting technique for MPC Inc. (Fill all the blanks; justify your answers). b. (10 points). The management of the company asked to reconsider the rolled-up forecast, and they agreed on a revised total sales volume forecast of $897,600. Your task is to prepare a force-down forecast. (Fill all the blanks; justify your answers)