The manager of the Mart convenience store (which is open 350 days per year) sells five cases of Duff soda each day (1750 cases per year). Order costs are $10.00 per order. The lead time for an order is six days. Annual holding costs are equal to $36 per case. The manager typically orders 40 cases each time she places an order. If the manager orders 40 cases each time she places an order, how many orders would she place in a year (to 2 decimal points)? a. 22.55 b. 80 O c. 43.75 d. 52.50