Which of the Following Is True of Real GDP

Which of the following is true of real GDP?

A) It measures a nation's output in terms of current year prices.
B) It measures a nation's output in constant year prices.
C) It measures the degree of change in the general price level in an economy.
D) It measures the change in the value of an economy's output.
E) It measures the value of both intermediate and final goods and services produced in an economy.