Where and How Was Most of the Helium in the Universe

Multiple Choice

Where and how was most of the helium in the universe created?

A) by nuclear reactions in the cores of stars, and was then thrown out into space by supernovae
B) by the collision of cosmic rays with hydrogen nuclei in interstellar gas clouds
C) by high-energy processes during the collapse of protogalactic clouds during the formation of galaxies
D) by nuclear reactions during the Big Bang