Petromax Enterprises usos a continuous review inventory control system for one of its SKUs. The following information is available on the tom. The firm operates 50 weeks in a year. Refer to the standard normal table for z-values > Demand 50,000 unitsyear Ordering cost-$35/order Holding cost-$2/unit/year > Average lead time 3 weeks > Standard deviation of weekly demand = 125 units a. The economic order quantity for this item is units. (Enter your response rounded to the nearest whole number) b.it Petromax wants to provide a 90% service level, the safety stock is 277 units (enter your response rounded to the nearest whole number) and the reorder point is units (enter your response rounded to the nearest whole number)