Correct Option: D

Net national product (NNP) is the total market value of all final goods and services produced by residents in a country or other polity during a given time period (gross national product or GNP) minus depreciation. The net domestic product (NDP) is the equivalent application of NNP within macroeconomics, and NDP is equal to gross domestic product (GDP) minus depreciation: NDP = GDP - depreciation.