Which of the Following Helps Low Income Countries Grow Rapidly

Which of the following helps low income countries grow rapidly relative to high income countries?

A) Low income countries are in a better position to save a larger share of their income.
B) Low income countries can copy (or borrow at a low cost) technologies and practices that have been successful in high income countries.
C) Low income countries generally have legal systems that protect property rights and enforce contracts in a more evenhanded manner.
D) Low income countries generally have more favorable weather