The Population in the Current Year Is 31

The population in the current year is 31.5 million and the real GDP is $814 million. The previous year's statistics were a population of 31 million and a real GDP of $800 million. The change in the standard of living, measured by growth in real GDP per person, is

A) 1.6 percent.
B) 7.75 percent.
C) 4.3 percent.
D) 6 percent.
E) 0 percent.