What is the best description of the relationship between the expansion of the universe and the redshift of light from galaxies?
A
The universe's expansion caused cooling that led to a redshift in the light emitted by galaxies.B
The redshift of light from galaxies is historical evidence that the universe was once expanding rapidly.C
The expansion of the universe causes a redshift of light from galaxies.D
The redshift of light from galaxies has caused the universe to expand.