3. Consider the graphs below and answer the exercises that follow, assuming lexicographical order where applicable. 2 of 3 (a) An Undirected Graph (b) A Weighted Graph (c) A Digraph (d) A Weighted Digraph Figure 1: llustration of various Graphs (a) Give the adjacency matrix representation for the graph in Figure 1b. [5 points (b) Give the adjacency list representation for the graph in Figure 1d. [5 points (c) Suppose the adjacency and incidence matrices below use the conventions discussed in class for digraphs and the vertices of these matrices are arranged in lexicographical order. Using the letters A, B, C, etc for the vertices, draw the digraphs. [15 points] -6 4 000 00 6 058-9 0 0 =100-5005 0 0 0-80-5 6 00 400 0-009 0-7 Adjacency Matrix Incidence Matrix Figure 2: Adjacency and Incidence Matrices for Two Digraphs