during the simulation. The precise working of the CustomerGenerator isn't important for the assignment, but if you are curious you have the code.For this assignment you will not need to create a Customer since the CustomerGenerator will do that, but you will need to access its properties. Two of these are set when the Customer is created and cannot be modified. You will want to set the service time when the Customer actually reaches teller.Begin your assignment using these three files.For a grade of 'C':We want to know how many tellers it takes so that no customer ever has to wait more than five minutes in line before being waited on. To get at this, and some other information our employer wants, we want to display the maximum minutes a teller was idle, the average minutes a teller was idle, the maximum minutes a customer had to wait and the average minutes a customer had to wait. (These last two need to be calculated on the fly, we aren't going to make all the customers wait in line until the day is over and ask them how long they waited.)You are going to need a Teller class. At a minimum, the Teller class should keep track of how much time it spends in the idle state, i.e. w/o having an active customer. It must also have some way to process a customer. To make things easier, I also suggest that the Teller have a reference to a Queue of customers so that it can pull the next customer off the queue. That will make moving to the work for a ‘B’ easier as well. I also encourage you to have a reference to the currentCustomer. You will also want a processNextCustomer method – see below.I'll leave most of the details up to you, but here is a very high level view of your process.Create an empty Queue of customersCreate a CustomerGenerator.Create a list of Tellers – start with some reasonable size, then modify the number until you have the fewest number of tellers but still have no wait time greater than five minutes. Note your code does not have to do figure this out; you can experiment until you find the right answer. Think carefully and you should be able to determine a good starting point based on the parameters passed to the CustomerGenerator constructor.Set the currentMinute to zero.Loop until the time duration expires AND the Queue is empty, performing the followingoget the list of customers from the customer generator for that minuteoadd them to the Queue of customersoforeach teller in the listhave the teller process a customer (processNextCustomer)the method should accept the current time as its argumentit should check to see whether it is still busy (Question: how does it know whether it is busy?) with an earlier customer; there are three possibilitiesobusyoreturn w/o doing anything

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