Which two pieces of evidence most directly support the idea that all matter in the universe began as a single point of energy?

A. The abundance of helium in the universe and Einstein's mass-energy equivalence

B. The abundance of helium in the universe and the redshift of light from galaxies

C. Einstein's mass-energy equivalence and the uniform distribution of cosmic background radiation

D. The redshift of light from galaxies and the uniform distribution of cosmic background radiation