Read the statements and select the correct option

Statement-A: Greenhouse effect is a naturally occurring phenomenon that is responsible for the heating of the Earth’s surface and atmosphere.

Statement-B: Greenhouse gases in the atmosphere absorb long wave radiation from the Earth and emit it again towards the earth.

Both statements are true. The incoming solar radiation heats the Earth’s surface and a small proportion of it is reflected back. Earth’s surface re-emits heat in the form of infrared radiation. Greenhouse gases (e.g. $C{O}_2$ and $C{H}_4$) absorb a major fraction of it. The molecules of these gases radiate heat energy, and a major part of it again comes to the Earth’s surface.