Refer to the following network for the below questions:

a$.$ Show row $6$ of the adjanecy matrix.

b$.$ Compare the improtance of nodes $2$ and $4$ using degree centrality metrics.

c$.$ Show the equation to calculate the similarity between $2$ and $4$ using co$-$citation similarity.

d$.$ Show the equation to calculate the similarity between the member $2$ and the member $4$ using the bibliographic

coupling measure