Empirical Evidence from 1960 to 2011 Shows That Convergence in Economic

Empirical evidence from 1960 to 2011 shows that convergence in economic growth is occurring in which of the following cases?

A) Low-income industrial countries are catching up to high-income industrial countries.
B) Low-income developing countries are catching up to high-income industrial countries.
C) Low-income agricultural countries are catching up to high-income developing countries.
D) All low-income countries are catching up to all high-income countries.
E) Low-income developing countries are catching up to low-income industrial countries.