Correct option is B
Methane () is the simplest hydrocarbon and belongs to the alkane family. It consists of one carbon (C) atom bonded to four hydrogen (H) atoms in a tetrahedral structure. Methane is a colorless, odorless gas and is the main component of natural gas.
It is widely used as a fuel and is a major greenhouse gas contributing to global warming. Methane is produced naturally through decomposition of organic matter in swamps, landfills, and the digestive systems of animals. It is also a byproduct of oil and gas extraction.