A E D F Figure 1: Social Network B C A social network appears in Figure 1. Use this network to answer Questions How many nodes are in the social network in Figure 1? Which node(s) has the greatest density? Which node(s) has the lowest density? Create an adjacency matrix and determine the degree centrality for each node. Which node has the highest centrality? Create another adjacency matrix to determine the closeness centrality for each node. Which node has the highest closeness centrality?