Considering a company with its manufacturing facilities situated at two places, Youngstown and Pittsburgh. The units produced at each facility are shipped to either of the company's warehouse hubs located at Cincinnati and Kansas City. The company has its own retail outlets in Houston, Tempe, Albany and Gary. The supply atsource Youngstown and Pittsburgh are 800 units and 600 units respectively and demand requirements at destinations, Houston, Tempe, Albany and Gary are 350, 200, 400 and 450 respectively. The costs of transportation from each source and destination are detailed in the table below; Create Network Diagram 2. Linear Programming Model 3. Solve the problem using Vogel's Approximation Method (5 points)Create Network Diagram 2. Linear Programming Model 3. Solve the problem using Vogel's Approximation Method