Correct option is D
The features of National Income are-
i. It is a macroeconomic concept that provides an overall measure of a country's economic performance.
ii. It is a flow concept, meaning it measures the value of goods and services produced during a specific period of time.
iii. It is always expressed with reference to a specific time period, usually a financial year or a calendar year.
iv. It includes the value of all final goods and services produced within a country's borders, not just intermediate goods. Thus, statement (d) is not correct.