The common measures of a queuing​ system's performance​ include:
A.
maximum queue​ length, maximum time a customer may spend in the​ queue, and average queue length.
B.
average time each customer spends in the​ system, probability that the service system will be​ idle, and average time each customer spends in the queue.
C.
average queue​ length, maximum time a customer may spend in the​ queue, and the utilization factor for the system.
D.
average time each customer spends in the​ system, maximum queue​ length, and probability of a specific number of customers in the system.
E.
probability that the service facility will be​ idle, average queue​ length, and probability that the waiting time will exceed a specified duration.