One Line of Evidence Supporting the Big Bang Theory Is

One line of evidence supporting the big bang theory is

A) the observed abundance of very light elements in our galaxy is just what is predicted by the big bang theory.
B) the observed abundance of very heavy elements in our galaxy is just what is predicted by the big bang theory.
C) the nuclear fission products observed in our galaxy are just what is predicted by the big bang theory.
D) the density of galaxies observed in the universe is just what is predicted by the big bang theory.
E) neutron stars have just the masses and frequencies of rotation that are predicted by the big bang theory.