a. Choose the correct network representation of this problem. (i) (ii) (iii) (iv) b. Develop a linear programming model that can be used to determine the plan that will minimize total distribution costs. If the constant is " 1 " it must be entered in the box. Let xij= amount shipped from supply node i to demand node j. c. Describe the distribution plan and show the total distribution cost. If your answer is zero enter " 0 ". a. Choose the correct network representation of this problem. (i) (ii) (iii) (iv) b. Develop a linear programming model that can be used to determine the plan that will minimize total distribution costs. If the constant is " 1 " it must be entered in the box. Let xij= amount shipped from supply node i to demand node j. c. Describe the distribution plan and show the total distribution cost. If your answer is zero enter " 0