In 2012, the imaginary nation of Dorados had a population of 8,000 and real GDP of 3,000,000. During the year its real GDP grew by about 2.9%. Which of the following sets of growth rates is consistent with this growth in real GDP?
A、2% population growth and 6% real GDP growth
B、6% population growth and 2% real GDP growth
C、4% population growth and 7% real GDP growth
D、7% population growth and 4% real GDP growth