The following table represents the cost of shipping from Distribution Centers 1, 2 to Customers A, B, or C. Customer DC A B C Supply 1 4 6 11 450 2 5 2 7. 500 Demand 200 350 300 1 - Formulate a linear programming model for this problem. (6 points) 2- Set up the initial tableau using North West Corner Method. (5 points) 3- Evaluate all empty cells using stepping stone method. (3 points) Find the optimal solution using stepping stone method and calculate the total optimal transportation cost. (3 points) 4