How Is the Expenditure Method of Measuring GDP Calculated

Multiple Choice

How is the expenditure method of measuring GDP calculated?

A) by adding up I + G + X
B) by adding up the final goods and services purchased domestically during a given period
C) by adding up domestic production of final goods and services for consumers, firms, government, and the international sector (through net exports)
D) by adding up the total expenditure of all firms incurred in the production of goods and services