Which of the Following Statements About Large-Scale Structure Is Probably

Which of the following statements about large-scale structure is probably not true?

A) Clusters and superclusters appear to be randomly scattered about the universe, like dots sprinkled randomly on a wall.
B) Galaxies and clusters have grown around tiny density enhancements that were present in the early universe.
C) Voids between superclusters began their existence as regions in the universe with a slightly lower density than the rest of the universe.
D) Many cluster and superclusters are still in the process of formation as their gravity gradually pulls in new members.