The correct option is B Methane
Methane does not cause acid rain. Methane is emitted by natural sources such as wetlands, as well as human activities such as leakage from natural gas systems and the raising of livestock.
Acid rain is caused by the large-scale emission of Nitrogen Oxides (NOx), SO2, Volatile Organic Carbons (VOCs), some amount of carbon monoxide and HCI from thermal power plants, industries, and automobiles.