You are conducting a retrospective analysis for an Order-Up-To system with delivery lead time of 4 weeks (thus, the unsold inventory at the end of a week is carried over to the next week). The beginning inventory in week 4 is 200 units, and you have in-transit orders (yet to be delivered) placed in week 1, 2, and 3 of the amounts 120, 110, 100, respectively. If you set an order-up-to level of 650 units, then the order quantity in week 4 is

O units (no order) 90 units 120 units 130 units 450 units none of the above