Call the USArrests data into R$.$

$\_\_$A$)\_$Produce a screeplot showing the SSW$,$ and use it to choose an appropriate

$\_\_\_\_\_$cluster number for k$-$means clustering.

$\_\_$B$)\_$Run k$-$means clustering using the chosen number of clusters from Part A$.$

$\_\_\_\_\_$Report the selected centroids, and SSB$/$SST value.

$\_\_$C$)\_$Produce some silhouette plots, and use them to choose an appropriate cluster

$\_\_\_\_\_$number for k$-$medoids clustering.

$\_\_$D$)\_$Run k$-$medoids clustering using the chosen number of clusters from Part C$.$

$\_\_\_\_\_$Report the selected medoids, and the final cost value.