This problem requires you to visualize the binary relationship between members of a karate club as an undirected graph. Please install the R library igraphdata, from which you can obtain the data set karate and work on it. Create a graph for karate. Once you obtain the graph, you will see that each vertex is annotated by a number or letter. What do the numbers or letters refer to? Do you see subgraphs of the graph? If so, what do these subgraphs mean?

Please skip the plotting part as I have done that, but I'm not sure what the numbers or letters refer to on each vertex. Or if the dots in blue and yellow are considered subgraphs and if all the numbers are coming from A and H.