The following quantity discount is offered to a company that purchases 120,000 units of the product annually. Order Quantity Price per Unit 0–1999 $50 2000–3999 $49 4000 or more $46 Each time an order is placed, the company incurs a cost of $75. If the company’s carrying charge is 25% of the price of the item, what order quantity should it use to minimize its total inventory-related costs?