df B) > of 3 ZOOM + b) Which are Citems? c) What is the annual dollar volume for all 20 items? PX 12.4 Lindsay Electronics, a small manufacturer of elec tronic research equipment, has approximately 7,000 items in its inventory and has hired Joan Blasco-Paul to manage its inven tory. Joan has determined that 10% of the items in inventory are A items, 35% are B items, and 55% are C items. She would like to set up a system in which all A items are counted monthly (every 20 working days), all B items are counted quarterly (every 60 working days). and all C items are counted semiannually (every 120 working days). How many items need to be counted each day! 12.5 Barbara Flynn's company has compiled the following data on a small set of products: ITEM ANNUAL DEMAND UNIT COST A 100 $300 B 75 100