4. Based on the information provided for the DB539 Drive Belt, determine a minimum and maximum quantity to maintain in inventory. Justify your response. aved Do Paragraph A h 10 TUS A quick review of past orders, shown in another document, indicates that a lot size of 150 units is being used and that the lead time from Hansong is fairly constant at two weeks. Currently, at the end of week 21, no inventory is on hand: 11 units are backordered, and there is a scheduled receipt of 150 units. The DB539 drive belt is purchased from the Bronson Corporation of Grand Rapids, Michigan. Actual demand so far in 2001 is shown in the following table: Week Actual Demand Week Actual Demand 11 18 17 50 12 33 18 53 13 53 19 14 54 20 49 15 51 21 52 16 53 54 Because this product is new, data are available only since its introduction in week 11