If real GDP per capita in the US were to increase at an average annual rate of 1.4% over the coming decades, then:

a. real per capita GDP will increase eightfold by the year 2116

b. nominal wages and real wages will grow at the same rate

c. real per capita GDP will grow at the same rate as labor productivity

d. it will take 35 years for real per capita GDP to double

e. it will take 50 years for real per capita GDP to double