Tile Depot, specializing in retail of construction materials, carries a popular flooring tile. The annual demand is estimated to be 5,000 cases. The ordering cost of this tile is $250 per order and the carrying cost is $10 per case per year. Tile Depot opens six days per week that is equivalent to 300 working days per year. The lead time for this item is usually two weeks or 12 working days. The economic ordering quantity (EOQ) for this item is a.$250 b.$300 c.$400 d.$500 e.$600