At iteration 100, the size of the Gaussian for cluster D is about 0.30 because ___________. 3 out of 10 observations each have more than 99% membership in cluster D, and 7 out of 10 observations have less than 1% membership in cluster D 3 out of 10 observations moved from small x1 values to large x1 values, and 7 out of 10 observations moved in the other direction 7 out of 10 observations have no membership in cluster D 10 observations each have about 30% membership in cluster D, and 70% membership in other clusters