Leaky Pipe, a local retailer of plumbing supplies, faces demand for one of its SKUs at a constant rate of 17,000 units per year. It costs Leaky Pipe $35 to process an order to replenish stock and $2.00 per unit per year to carry the item in stock. Stock is received 12 working days after an orde is placed. No backordering is allowed. Assume 250 working days a year. a. Leaky Pipe's optimal order quantity is 771 units. (Enter your response rounded to the nearest whole number.) b. The optimal number of orders per year is 22 orders. (Enter your response rounded to the nearest whole number.) c. The optimal interval (in working days) between orders is days. (Enter your response rounded to one decimal place.) d. The demand during lead time is units. (Enter your response rounded to the nearest whole number.)