Given the following data for a transportation problem, create an initial feasible solution to the transportation problem using the northwest corner rule. Then, calculate all the improvement indices. Is this solution optimal? From To A B C Supply 1 $10$4$11 70 2 12 5 8 50 3 9 7 6 30 Demand 40 50 60 150 Select one: O a. 1 to A = 401 to B = 30 | 2 to B = 20 2 to C = 30 3 to C = 30 Optimal solution O b.1 to A = 30 |1 to B = 40 | 2 to A = 10 | 2 to B = 102 to C = 30 3 to C = 30 Optimal solution O c. 1 to A = 40 1 to C = 302 to B = 503 to C = 30 Optimal solution O d. 1 to A = 401 to B = 302 to B = 202 to C = 30 3 to C = 30 Not optimal solution O e. 1 to A = 301 to B = 40 | 2 to A = 102 to B = 10 2 to C = 303 to C = 301 Not optimal solution O f. 1 to A = 401 to C = 302 to B = 503 to C = 30 | Not optimal solution O g. None of the options provided