4. Once again , show your work by hand ( scan or photo your handwritten work ) or by typing out all the values in Microsoft Word ( hint : handwritten photocopy will likely be easier ! . PROBLEM INFO : The bookstore at Delta State orders sunglasses with a fighting okra on the arms and sells them for $ 50 each . During a typical month , 900 sunglasses are sold . It costs $ 25 to place an order and 25 percent to carry sunglasses in inventory for a year . (15 points ) a . How many sunglasses should the bookstore order at one time ( i.E., lot size , EQQ ! ?" b . The supplier would like to deliver sunglasses once a week . How does this compare to the preferred lot size found in part a ? Will there be additional costs to the bookstore to comply with the supplier's* request ?" C .` Suppose the sales increase to 1500 sunglasses per month , but the manager decides to keep the lot size the same as in part a . How much will this decision cost the bookstore per year ? Compare the TC of this decision to the TC of ordering the EQQ found in part a