Acost center is a unit of a business that incurs costs without directly generating revenues. all of the following are considered cost centers except: select one:

a. accounting department at warner bros.
b. purchasing department at best buy.
c. research department at microsoft.
d. advertising department at hertz.
e. juice division at coca cola.

The manager of the quick stop corner convenience store (which never closes) sells four cases of stein beer each day. order costs are $8.00 per order, and stein beer costs $.80 per six-pack (each case of stein beer contains four six-packs). orders arrive three days from the time they are placed. daily holding costs are equal to 5 percent of the cost of the beer. if he were to order 16 cases of stein beer at a time, what would be the average inventory level? a. 0.25 days b. 3 days c. 1 day d. 4 days e. 20 days