In Germany, real GDP per person was $2,422 in 1870 and $50,369 in 2017. The growth rate was 2.09% per year. Which of the following is true?
A. The growth rate of 2.09% per year ignores short-run fluctuations around the long-run trend and represents an average rate of growth for real GDP per person over the period.
B. The growth rate of 2.09% per year accounts for short-run fluctuations around the long-run trend.
C. Each year, for 147 years, real GDP per person increased by 2.09%
D. 2.09% per year is an average rate of growth for real GDP per person, actual growth in each year was much lower