Annual demand for the notebook binders at Duncan's Stationery Shop is 10,200 units. Dana Duncan operates her business 300 days per year and finds that deliveries from her supplier generally take 5 working days. a) Calculate the reorder point for the notebook binders that she stocks. The reorder point for the notebook binders is units (round your response to the nearest whole number). b) Why is this number important to Duncan? OA. This number is important because it tells Duncan the number of notebook binders she can order in a single shipment. OB. This number is important because it lets Duncan know how many notebook binders she can store in her inventory. OC. This number is important because it is the average number of notebook binders Duncan sells per day. OD. This number is important because it helps Duncan keep enough inventory to prevent stockouts while she waits for the new order to arrive.