According to Barro's Simple Linear Regression Relating Data on the Levels

According to Barro's simple linear regression relating data on the levels of 1973 real per capita GDP and post-1973 rates of growth,

A) per capita real output in the world has converged since 1973.
B) per capita real output in the world has diverged since 1973.
C) there is no statistically significant relationship between initial income and subsequent growth.
D) our impression from eye-balling the data was completely wrong.