Develop a solution with PPB Lot-Sizing technique and calculate the total relevant costs for the gross requirements in the following table". O 3 4 8 9 Period Gross requirements 1 2 20 5 6 7 40 70 20 10 11 12 80 40 40 10 6 9 *Holding cost = $2.50/unit/week; setup cost = $200; lead time = 1 week; beginning inventory = 40. Develop a PPB solution (enter your responses as whole numbers). Period 1 2 3 4 5 7 8 10 11 12 Gross requirements 20 40 40 70 20 10 80 40 On-hand at beginning of period 40 On-hand at end of period Order receipt Order release 40 The total cost is $ (enter your response as a whole number)