d Question 21: The value of imports is subtracted from the amount of expenditure in an economy by households (C), firms (I), and government (G), over a specified period of time, because: a) Nominal GDP refers only to the value of final goods and services produced within the nation. b) Total expenditure in an economy by households (C), firms (I), and government (G) includes expenditure on goods and services that are produced in other countries. c) The value of imports refers to the value of goods and services which are produced in other nation's and sold in the domestic country (ie. Turkey). d) Answers a, b and c. e) Answers a and b only.