content area top Part 1 What does real GDP measure? Question content area bottom Part 1 A. the fluctuations of national income around its long-term trend B. the constant-dollar value of the potential output of the nation's economy over the period of one year C. the annual growth rate of real national income D. the constant-dollar value of total output produced by the nation's economy over the period of one year E. the long-term trend in total output produced by the nation's economy