The correct option is A Harrod Domar Model
The First Five Year Plan model was based on Harrod Domar Model. It was launched by the Government of India in the year of 1951. The first five year plan mainly focused on the development of the primary sector of the economy. It was presented before the Parliament of India by former Prime Minister Pandit Jawaharlal Nehru.
Hence, option (A) is the correct answer.