With a Single-Server Model, Increasing the Arrival Rate by 10

Multiple Choice

With a single-server model, increasing the arrival rate by 10 percent and also increasing the service rate by 10 percent will result in:

A) no change in the probability that there are n customers in the system.
B) a decrease in the average waiting time in line.
C) an increase in the average time spent in the system, including service.
D) an increase in the average number of customers in the system.