c. Calculate the future sum of $5,000 given that it will be held in the bank 5 years at an annual interest rate of 6 percent. d. Knutson Products, Inc., is involved in the production of airplane parts and has the following inventory, carrying, and storage costs: i. Orders must be placed in round lots of 250,000 units. The carrying cost for 1 unit of inventory is $ 10 The ordering cost is $100 per order. Determine the optimal EOQ level. ii. Determine the average inventory when the safety stock is 2000 units.