You are given a network with 6 nodes (labeled 1, 2, 3, 4,5,6) and 9 arcs. The arcs, their capacities and the current flow through the arcs are given below. (a) (points: 5) Draw the network along with the capacities and the flow. Verify whether the current flow is a maximum flow. (b) (points: 5) A new arc 23 is laid in the network with capacity 20. Is the current flow a maximum flow in the new network? Justify your answer. If it is not a maximum flow, find a maximum flow in the new network