Firm C's demand for a product is 60 units per month. Its supplier charges an ordering cost of $40 per order and $35 per unit with a 20% discount for orders of 100 units or more. Orders must be placed in integer multiples of 100 units. Firm Cincurs a 20% annual holding cost. What is the optimal order quantity that minimizes the total annual purchasing, ordering, and holding cost? Multiple Choice 101 100 91 110