8. An operations planner, Lovell Bradley, is develop- ing a sales and operations plan that involves back orders. The company's demand and production rates for the next four periods are as follows: Period Sales Plan Production 1 1 8,200 8,000 N 10,000 8,000 3 7,000 8,000 4 6,600 7,600 Beginning inventory at the start of period 1 is 400 units. Calculate beginning inventory, ending inven- tory, average inventory, and the back order amount, if any, for each of the next four periods. 2 6 points Consider Question 8, regarding the operations planner Lovell Bradley. If we record a backordering cost of 518 per unit backordered in any period in which ending Inventory is negative, what would total backorder cost be over these four periods? Type your