8 observations are clustered into 3 clusters using K-Means clustering algorithm. After first iteration clusters, C1, C2, C3 has following observations: C1: {(2,2), (4,4), (6,6)} C2: {(0,4), (4,0),(2,5)} C3: {(5,5), (9,9)} What will be the cluster centroids if you want to proceed for second iteration?

• A. ??c1: (4,4), c2: (2,2), c3: (7,7)
• B. c1: (6,6), c2: (4,4), c3: (9,9)
• C. ??c1: (2,2), c2: (0,0), c3: (5,5)
• D. c1: (4,4), c2: (3,3), c3: (7,7)