By Which scale the value of all economic activity produced by a nation during a given period is measured ?

By Which scale the value of all economic activity produced by a natio

1.	By Which scale the value of all economic activity produced by a nation during a given period is measured ?
A.	Gross Domestic Product (GOP)
B.	Gross National output (GNO)
C.	Gross National Product (GNP)
D.	Gross National output
Answer» D. Gross National output