The correct answer is the Central Statistics Office. The Central Statistics Office (CSO), under the Ministry of Statistics and Program Implementation, is responsible for calculating the GDP of India, macroeconomic data gathering, and statistical record keeping. The gross domestic product (GDP) is one of the primary indicators used to gauge the health of a country's economy. GDP can be calculated by using three methods, the supply or production method, the income method, and the demand or expenditure. Important PointsMinistry of Finance under the government of India, is concerned with the economy of India. Serving as the treasury department of India. R. K. Shanmukham Chetty was the first Finance Minister of independent India. It formed on 29 October 1946. The present Minister is Nirmala Sitharaman. RBI is the central banking institution, which controls the monetary policy of the Indian rupee, fully owned by the Government of India. It was established on 1st April 1935 in Kolkata but nationalized on 1st January 1949. RBI consists of Governor, 4 Deputy Governors, 2 Finance Ministry representatives. The First Governor of RBI was Sir Osborne Smith (1935 “ 1937). The First Indian Governor of RBI was CD Deshmukh (1943 “ 1949). The only Prime Minister who was the Governor of RBI was Manmohan Singh (1982 “ 1985). The First women deputy Governor of RBI was KJ Udeshi. The present Governor is Shaktikanta Das. The Chief Economic Adviser (CEA) is one of the bodies of Government of India, head of the Economic Division of the Department of Economic Affairs. The key roles of Indias chief economic advisor are to determine the governments overall strategy in managing the economy. CEA advises the Government of India on matters related to finance, commerce, trade, economy and directly report to the Minister of Finance.