We are given the following information about a product. Cost of placing an order = $100 Cost per item = $5 Sale price per item = $8 Annual holding cost = 40% of cost of item Expected Annual demand = 5000 units Lead time demand = normally distributed with mean 20 and variance 900 (a) If the reorder point that minimizes expected cost is 80, what is the shortage cost per unit? (Assume backlogged)