What defines a centrality measure for the nodes (webpages) in this web-graph?

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Question:

What defines a centrality measure for the nodes (webpages) in this web-graph?

A.

Eigenvector Centrality

B.

Katz Centrality

C.

PageRank

D.

Group Centrality

Answer» c. PageRank

Note: The above multiple-choice question is for all general and Competitive Exams in India.