4. Production Management Question: In the class we discussed different types of queuing models used by companies/service systems to | manage the waiting lines of customers and waiting time that customers spend in queues to get services at different service systems. Now based on your understanding, a. Define queueing system and briefly explain the major factors/characteristics that needs to be considered for designing a queueing system. b. Name one company/organization firm service system that uses a queueing system based on multiple channel(s), exponential constant service time & infinite-source of population. c. Briefly explain how the company/organization/firm/service system you mentioned in (b) uses different criteria such as population size, number of servers/channels and arrival and service patterns to manage the waiting line and waiting time for its customers