Which of the following statements about the motion of galaxies is correct? a. All galaxies are moving apart. b. Superclusters of galaxies are all moving apart. c. Superclusters of galaxies are all...

Which of the following statements about the motion of galaxies is correct? a. All galaxies are moving apart. b. Superclusters of galaxies are all moving apart. c. Superclusters of galaxies are all moving toward each other. d. The Milky Way Galaxy is at the center of the universe. e. All clusters of galaxies in each supercluster are moving toward each other.