With All of the Sun's Energy Striking the Earth Every

With all of the sun's energy striking the Earth every second of every day,why doesn't the Earth overheat and kill us all?

A) The Earth is so large and dense that it absorbs all of this heat.
B) The Earth is overheating regionally,melting rocks into the lava of volcanoes.
C) The Earth maintains a balance by radiating this heat back into space.
D) The atmosphere of the Earth prevents the solar radiation from reaching the Earth's surface.