From 2006 to 2010,per Capita Real Gross Domestic Product (GDP)in

From 2006 to 2010,per capita real gross domestic product (GDP) in Japan grew an average of 0.46% per year.At that rate,according to the Rule of 70,in roughly how many years will the Japanese economy double in size?

A) 71 years
B) 128 years
C) 35 years
D) 225 years
E) 152 years