Joan manages an office supply store. One product in the store is computer paper. She knows that 10,000 boxes will be sold this year at a constant rate throughout the year. There are 250 working days per year and the lead-time is 3 days. The cost of placing an order is $30, while the holding cost is $15-per box per year. If Joan orders 500 boxes each time he orders from his supplier, what would his total annual inventory cost be (holding cost plus ordering cost)? 53.075 $3,750 $4,350 None of the above $3,000