need urgent correct answers

Twitter 2 points possible (graded) Consider a Twitter dataset that consists of the following data: users : = 1, . . ., n, list of followers f; for each user i. 1. What is the most appropriate graph type that could model the dataset? Simple, directed graph O Simple, undirected graph Simple, bipartite graph Simple, weighted (directed) graph O Multigraph 2. Which centrality measure of the ones studied so far is most suited to capture the importance of the users in the network? O Eigenvector centrality Page-rank centrality O Katz centrality