Select the correct statement about the Big Bang theory.
Choose Your Option
A. It talks of many huge explosions unimaginable in physical terms.
B. The universe expanded and hence, the temperature increased. Hydrogen and Helium formed sometime later.
C. The gases condensed under gravitation and formed the galaxies of the present day universe.
D. In the solar system of the Milky Way galaxy, earth was supposed to have been formed about 4.5 million years back.