Arrange the following steps in calculation of National Income by "Income method" in the correct sequence:

1. Add net factor income from abroad to arrive at National Income
2. Estimate the factor income paid by each sector
3. Identify and classify the income-generating units
4. Calculate domestic factor income

Choose the correct answer from the options given below:

C, B, D, A

Following are the steps in the correct order for the calculation of the National income with the help of "Income method":

1. Identification and classification of various income-generating units
2. Estimation of the factor income paid by each sector
3. Calculation of the Domestic factor income (NDP_FC)  = Compensation of employees + Operating Surplus + Mixed Income of Self-employed
4. Add net factor income from abroad to arrive at National Income/ Calculation of National income (NNP_FC) = NDP_FC + NFIA