Galaxies in the Universe Are

Galaxies in the universe are:

A) distributed randomly, their density remaining approximately constant throughout space.
B) collected into superclusters that are concentrated along surfaces surrounding empty spaces that contain very few galaxies.
C) concentrated into a central supercluster with other clusters rotating about it in a huge, flat disk like a supergalaxy, with very few galaxies outside this disk.
D) all concentrated in spherical clusters, and these clusters are distributed uniformly throughout space.