Which of the following are the Green house gases?
A. Water vapour
B. Ozone
C. I$$_2$$
D. Molecular hydrogen
Choose the most appropriate answer from the options given below :

Greenhouse gases are those that absorb and emit infrared radiation, contributing to the greenhouse effect.

A. Water vapour: The most abundant greenhouse gas. Yes.

B. Ozone (O₃): A greenhouse gas that absorbs infrared radiation. Yes.

C. I₂ (Iodine): Molecular iodine is not a greenhouse gas. It does not significantly absorb infrared radiation in the atmosphere. No.

D. Molecular hydrogen (H₂): H₂ is a homonuclear diatomic molecule with no permanent dipole moment, so it does not absorb infrared radiation. No.

The greenhouse gases are A and B only.

This matches option 3.