Getafe28 manufactures over 100,000 different versions of messenger bags. Suppose Getafe28 implements a periodic review model to manage its inventory of a particular plastic buckle. Getafe28 places an order every week and the lead time to receive these buckles is three weeks. Demand is approximately normally distributed with a mean of 2300 units per week and a standard deviation of 1300. ? c) What is the order quantity if the current inventory position is a backorder of 190 bags?