Which of the Following Best Characterizes the Growth in Population

Which of the following best characterizes the growth in population of Africa's tropical regions?

A) Population growth was largely intensive, and densely populated urban centers sprang up throughout the region.
B) Population growth remained stagnant throughout the first millennium C.E., and communities never obtained complex forms of organization.
C) Population growth was largely extensive, and farming communities steadily populated the region.
D) Population growth was stunted by continual outbreaks of disease.