Hey I'm having some trouble with this question, help would be great, thanks in advance.

The IMF forecasted Finden's real GDP at $1,500 billion in 2019 and $1,600 billion in 2020, and Finden's population at 7.0 million in 2019 and 7.2 million in 2020. Calculate the approximate number of years it will take for real GDP per person in Finden to double if the 2020 growth rate of real GDP and the population growth rate are maintained. O A. 15 years O B. 28 years O C. 23 years O D. 19 years