Q11) Consider the following data set Data={1,2,4,5,7,8,9} Assume that we applied two different approaches to cluster this dataset. In the first approach, we clustered the dataset in 3 clusters as follows: C1={1,2},C2={4,5},C3={7,8,9} In the second approach, we clustered the same dataset in 2 clusters as follows: C1={1,2,4,5},C2={7,8,9} Calculate the Dunn index for each approaches. Based on your calculated Dunn index, which approach generated better clusters