5-23. Consider the transportation models in Table 5.349. Table 5.34 Transportation Models for Problem 5-23 (i) (ii) (iii) $0 8 $2 $2 5 $2 $1 $4 5 $1 $5 $3 10 9 5 $10 $2 $1 7 $4 $3 $2 $2 $4 $0 5 6 $7 $1 5 $3 $4 $8 6 $5 $9 $6 19 4 7 19 6 6 a. Use the northwest-corner method for (iii), Least Cost Rule for (ii) and Vogel approximation method for (i) to find the starting solution. b. Use the solution obtained by the northwest-corner method for (iii), and develop the iterations that lead to the optimum solution