Victor Pimentel uses 1,500 per year of a certain subassembly that has an annual holding cost of $45 per unit. Each order placed costs Victor $150. He operates 300 days per year and has found that an order must be placed with his supplier 6 working days before he can expect to receive that order. a) The economic order quantity is units (enter your response as a whole number). b) The annual holding cost is $ (enter your response as a whole number). c) The annual ordering cost is $ (enter your response as a whole number). d) The reorder point is units (enter your response as a whole number)