(b) Explain how to model different aspects of a computer network or airline routes using simple graph, a multigraph, a pseudograph, a directed graph, and a directed multigraph? (10 marks) (c) Describe the following families of graphs and give an example for each one . Kn, the complete graph on n vertice . K(m,n), the complete bipartite graph on m and n vertices . Cn, the cycle with n vertices Wn, the wheel of size . Qn, the n-cube 11 marks)