Bell Computers purchases integrated chips at $$350$ per chip. The holding cost is $$35$ per unit per year, the ordering cost is $$120$ per order, and sales are steady, at $400$ per month. The company's supplier, Rich Blue$-$Chip Manufacturing, Inc., decides to offer price concessions in order to attract larger orders. The price structure is shown below.a$.$ What is the optimal order quantity and the minimum cost for Bell Computers to order, purchase, and hold these integrated chips? b$.$Bell Computers wishes to use a $10\%$ holding cost rather than the fixed $$35$ holding cost in part, what is the optimal order quantity, and what is the optimal cost.sary for the coming year to reach thenn nerRich Blue Chip's Price StructureQuantity PurchasedPrice$/$Unit$1-99$ units$$350100-199$ units$$325200$ or more unit$$300$