The common measures of a queuing system's performance include average time each customer spends in the system, the maximum queue length, probability of a specific number of customers in the system. probability that the service facility will be idle, average queue length, probability that the waiting time will exceed a specified duration average queue length, the maximum time a customer may spend in the queue, the utilization factor for the system. O average time that the service facility is idle, minimum queue length, the probability that the waiting time will exceed a specified duration. average time each customer spends in the system, the probability that the service system will be idle, average time each customer spends in the queue. All following are correct statements regarding the reorder point (ROP) EXCEPT (choose the best answer) The ROP is larger than demand multiply by lead time if safety stock is present. In case of, a constant lead time and a constant demand during lead time, still ROP should/can be computed ROP cannot be computed for the fixed-period inventory model. The ROP is that quantity that activates an action to order an item. The reorder point is a part of safety stock that inventory models should compute