The national income of a country for a given period is equal to 1. total value of goods and services produced by the nationals 2. sum of total consumption and investment expenditure 3. sum of personal income of all individuals 4. money value of final goods and services produced Which of the following code is/are correct

• A. 1 only
• B. 2 only
• C. 3 only
• D. 4 only