entity uses 400 lbs. of a rare isotope per year The isotope costs $500 per lb, but the supplier is offering a quantity discount of 2% for order sizes between 30 and 79 lbs and a 6% discount for order sizes of 80 lbs or more. The ouchiasino ana are $20 Carying costs ar 00 per b of materialand are rnot affecded by the discounts if the purchasing manager places eight orders of 50 lbs. each, the total cost of ordering and carrying inventory, includin discounts lost, will be A. $6,600 B. S4100 O C. $1,600 D. S12,100