3. Minimum Cost Network Flows (a) Solve the MCNFP given in Figure 2 with the following initial basic feasible solution. Initial BFS: Basic arcs -((5,1).(1,2).(3,4), (2,3)), where flow on these ares is set to (4, 4, 3, 3), respectively. Nonbasic arc at its lower bound (1,3). All remaining arcs are nonbasic at their upper bounds. Assume ys -0. (Cyu 0 lFixed external flow] (10,3) (18,4) (124) (11,5 (13,5) (16,4) Figure 2. MCNFP (b) How much worse than optimal in terms of the objective function is the initial BFS? 3. Minimum Cost Network Flows (a) Solve the MCNFP given in Figure 2 with the following initial basic feasible solution. Initial BFS: Basic arcs -((5,1).(1,2).(3,4), (2,3)), where flow on these ares is set to (4, 4, 3, 3), respectively. Nonbasic arc at its lower bound (1,3). All remaining arcs are nonbasic at their upper bounds. Assume ys -0. (Cyu 0 lFixed external flow] (10,3) (18,4) (124) (11,5 (13,5) (16,4) Figure 2. MCNFP (b) How much worse than optimal in terms of the objective function is the initial BFS