LEE is considering manufacturing many of the components. The cost to set up for producing a standard component is approximately $200 (considering labor, testing facilities, etc.). Once set up they can produce at a rate of approximately 20 units /day (4,000 units per year) at a cost of $100 each. Daily demand is forecast at 15 units. If the firm uses a 30% annual rate of inventory value for holding inventory: [Note: It is Production Run Length or Production Run Size model (ERL) related problem] What is the average inventory level (i.e., average inventory level of production run size)? (find the nearest value) Group of answer choices 99.99 units None of the Above 77.46 units 50 units 54.77 units