This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Definition and Concepts in Sociology & Psychology, Subject name: Social & Preventive Medicine
Income generated within a country is known as: 
Select and explain. 
A. Gross Domestic Product (GDP), B. Net National Product (NNP), C. Net Domestic Product (NDP), D. Purchasing Power Parity (PPP)
A: Gross Domestic Product (GDP)
Answer: A: Gross Domestic Product (GDP) 
Explanation: Gross Domestic Product (GDP):Gross income generated within a country (excludes net income received). Gross National Income (GNI)/Gross National Product (GNP): Is gross income generated from within the country and also net income received from abroad . Net National Product (NNP): GNP minus capital we consume. Net Domestic Product (NDP): GDP minus value of depreciation on fixed assets. Purchasing Power Parity (PPP): No. of units of a country's currency required to by the same amount of goods and services in domestic market, as 1 dollar would buy in USA.