High Energy Sources on Early Earth, Which Were Most Likely

High energy sources on early Earth, which were most likely involved in the origin of life, included:

A) volcanic activity, lightning, and ultraviolet radiation.
B) bombardment from meteorites, gamma radiation, and cosmic radiation.
C) intense radiation, volcanic activity, and redox energy.
D) oxidizing environment, electrical discharge, and geothermal energy.
E) infrared radiation, ultraviolet radiation, and oxidizing radiation.