(A) Atomic Energy Commission: The Atomic Energy Commission (AEC) of India was established in 1948, and it plays a crucial role in the development and implementation of India's nuclear energy program. It is responsible for various aspects of nuclear energy, including research, development, and the promotion of peaceful uses of nuclear energy.

C) Oil and Natural Gas Commission (ONGC): The Oil and Natural Gas Commission (ONGC) was established in 1956. It is India's flagship exploration and production company in the oil and gas sector. ONGC is involved in the exploration and production of oil and natural gas and plays a significant role in ensuring the country's energy security.

D) Steel Authority of India Limited (SAIL): The Steel Authority of India Limited (SAIL) was established in 1973. It is one of the largest steel-making companies in India and is involved in the production and sale of steel. SAIL operates several steel plants across the country and is a major player in the steel industry.

B) Gas Authority of India Limited (GAIL): The Gas Authority of India Limited (GAIL) was established in 1984. It is a government-owned natural gas processing and distribution company. GAIL is involved in the exploration, production, processing, transmission, distribution, and marketing of natural gas.