as a Word file, or an Excel file, or solve it on paper, take a picture, and upload it to Canvas Don't forget to explain your work! Your factory manufactures tricycles. You need to purchase front wheels from the supplier. The expected annual demand is D units; the setup or ordering cost is $5 per order; and the holding cost per unit per year is $H. Based on the number given in the table below: a. b. Determine optimal number of wheels to order (2 pts) Determine the reorder point (ROP) (without safety stock) assuming that the average lead time is L days, and your factory works 250 days a year. (2 pts) c. Based on your answer in (b), determine the reorder point (ROP) (with safety stock) assuming that the standard deviation of daily demand is oa and the standard deviation of the lead time is 0. Acceptable service levels are given in the table below. (3 pts) D 1800 H 2.15 S 8 L LO 5 Od 0.32 OL 1.61 Service Level 93%