Perform a cluster analysis for the exercise survey, with k$-$means analysis using current exercise objectives of respondents with respect to "Cardiovascular" and "Strength and Power" $($CO$\_1$ and $2).$ Use only k$=2$ and k$=3$ clusters for this analysis $($to cut down on workload$).$ Please indicate: $(1)$ whether you would go with a $2$ or $3$ cluster solution, $(2)$ your rationale $($use "elbow thinking" although you only have two points$),$ and $(3)$ the descriptions you would provide for each of the clusters$/$segments