8. The Kingston Wharves Company has in the past ordered raw material "Allegro" in quantities of 3,250 units, which is 13 weeks' supply. Management has decided to change over to an ordering system based on economic order quantities. Assume the following information pertaining to the company's purchasing and production activity: Inventory usage rate: 120 - 130 units per week Lead time: 2-4 weeks Unit price: $1.50 Order cost: $7.50 per order Carrying cost: $0.30 per unit per year You are required to calculate the: (a) Economic Order Quantity (EOQ) (b) Re-order level (c) Maximum level (d) Minimum level Total annual order cost and carrying cost at the EO