Powerco has 3 electric power plants that supply the needs of 4 cities. Each power plant can supply the following numbers of kilowatt-hours (kwh) of electricity: plant 1 45 million; plant 2- 40 million; plant 3 - 35 million (see Table 1). The peak power demands in these cities, which occur at the same time (2pm), are as follows (in kwh): city 1- 25 million; city 2 - 25 million; city 3 35 million; city 4 - 30 million. The costs of sending 1 million kwh of electricity from plant to city depend on the distance the electricity must travel. a) Find a BFS to this problem. 18 6. 10 9. 45 19 17 40 24 5 35 25 35 30 25 b) Carry out one iteration to move on to the next iteration and check whether or not you found the optimum solution.. Begin with the bfs found in part (a).