You are conducting a retrospective analysis for an Order-Up-To system (thus, the unsold inventory at the end of a week is carried over to the next week). The beginning inventory in week 1 is 150 units, the demand in week 1 is 180 units and the demand during week 2 is 250 units. If you receive a shipment of 115 units every week, at the end of week 2,

	the inventory level is 180
	the inventory level is 200
	the inventory level is 310
	the backorder level is 30
	the backorder level is 50
	none of the above is correct