According to the World Bank, in 2016 the infant mortality rate in Ireland was 3; in Mali it was 68. Which of the following is the most likely explanation for this difference?
A. Extremely high birth rates in Mali
B. The low dependency care ratios in Mali
C. Differing levels of pre- and post- natal care
D. Moderately low birth rates in ireland
E. The high dependency care ratios in Ireland