I need help with this question

Quick Stop Corner convenience store sells 1440 cases of Stein beer per year. It costs $18 to process an order of beers. The cost/price of Stein beer is $32 per case. The shipment of all ordered beer cases arrives three days after the order is placed. The annual unit holding cost is fifteen percent of the cost/price of the beer per case. Quick Stop Corner convenience store opens 360 days a year. Which of the following statements is correct for the optimal inventory policy that minimizes the total annual inventory costs? The company needs to place an order when the beer inventory level drops to 10 cases. The inventory cycle time is 25 days. The cycle inventory level is 52 cases. The economic order quantity is 108 cases