3. value: 10.00 points Problem 21-20 The MRP gross requirements for Item A are shown here for the next 10 weeks. Lead time for A is three weeks and setup cost is $9. There is a carrying cost of $0.010 per unit per week. Beginning inventory is 75 units. WEEK 1 2 3 4 5 6 7 8 9 10 Gross requirements 30 35 10 25 75 85 20 65 220 55 Use the least total cost and the least unit cost lot-sizing method to determine what quantity the first order should be released and for which period. Quantity Ordered Period Least total cost 180 4 to 8 Least unit cost 100 4 to 8 references ebook & resources previous attempt