Answer: Option A
Answer: (a)
Dadabhai Naoroji prepared the first estimates of National income in 1876. He estimated the national income by first estimating the value of agricultural production and then adding a certain percentage as non-agricultural production.
However, such a method can only be called a non-scientific method. The first person to adopt a scientific procedure in estimating the national income was Dr VKRV Rao in 1931.