PROBLEM-1) (20 Pts.) Discrete-event system simulation is the modeling of systems in which the state variable changes only at a discrete set of points in time. The figure below shows a set of steps to guide a model builder in a thorough and effective simulation study. Every simulation modeling study should begin with a statement of the problem. If the statement is provided by the policymakers or those that have the problem, the analyst must ensure that the problem being described is clearly understood. The objectives of the model indicate the questions to be answered by simulation and dictate the kind of data to be collected. Accordingly, the essence of the real system should be studied in the model. Choose one of the systems stated below; then, apply the first four steps of the simulation to initiate a simulation modeling of the selected system: A. An automobile repair company (including the spare parts flow) B. A polyclinic (including emergency unit) C. A furniture manufacturing company (including inventory) D. A flight training school (including the classroom training and the airport/ flight training)