Select the best statement:

Select the best statement:

There are two servers and two types of customers in the Jackson network simulation model

The average flow time in the Jackson network simulation model is around $9$ minutes

A single run of the Jackson network simulation model will suffice to estimate process KPIs

In the Jackson network simulation model, the average waiting time at the second station is measured using a timer

The two$-$queue sequential Jackson network discussed in the chapter on simulation cannot be analyzed using queueing models