According to Chapter 1, Some of the Differences in GDP

According to Chapter 1, some of the differences in GDP per capita by region is due to:

A) Differences in the distribution of natural resources by key region
B) Difference in access to and attainment of higher education
C) Differences in the development of tools by early residents of each region
D) Differences in the transition from a hunting and gathering society
E) All of the above are true
F) None of the above are true