According to Figure 12

According to Figure 12.2, which compares the age-sex structure of developing countries and developed countries:

A) most will retain an extremely small elderly population in 2030 because life expectancy will remain low while fertility rates will likely remain high
B) the oldest-old will be among the largest cohorts of any age group
C) the ratio of older women to older men is more equal in less developed countries than in more developed countries
D) the pyramid shape of less developed countries will look only slightly different in 2030 compared to 1950, unlike in the developed countries
E) the largest age cohort by far will remain those who are aged 0-4