In 2008, Armenia Had a Real GDP of $4

In 2008, Armenia had a real GDP of $4.21 billion and a population of 2.98 million. In 2009, real GDP was $4.59 billion and the population was 2.97 million. What was Armenia's economic growth rate from 2008 to 2009?

A) 9.0 per cent
B) 3.8 per cent
C) 0.38 per cent
D) 8.3 per cent