【单选题】If you were asked to study the quantity of output an economy produced over the past five years, you would use real GDP rather than nominal GDP because
A.
exports are excluded from real GDP, making it less complicated than nominal GDP.
B.
real GDP accounts for imports, making it more precise than nominal GDP.
C.
nominal GDP fails to account for transfer payments, whereas real GDP includes these payments.
D.
nominal GDP reflects changes in both output and prices, whereas real GDP, roughly speaking, merely reflects changes in output.