25 Supply N Consider the following Transportation problem whose initial solution is given below: Demand 1 2 3 4 5 16 20 12 10 9 1 13 12 14 8 18 7 15 16 9 25 26 24 16 13 11 3 18 1 1 20 18 16 14 10 12 Check whether this tableau is optimal or not by finding the u; and v; values. Let Oj = x; + v, - Cij, be the coefficient of variable Xij, and AC Enow - Cnext the amount of cost reduction. If @ ; > 0, then enter the "+" sign before the number, e.g., +8. Similarly, do so when j