In 1979, real GDP per person was $1,000 in both China and India. Suppose China was able to grow at 10% per year while India grew at 5% a year starting 1979. According to the rule of 70, in 14 years' time since 1979,
A. India's real GDP per capita would double to $2000 but it is unknown by how much China's real GDP per capita would increase.
B. India's real GDP per capita would be $2000 but China's would be $4000.
C. China's real GDP per capita would be four times as big as India's real GDP per capita.
D. India would see its real GDP per capita double while China would see its real GDP per capita triple.