Which of the Following Population Groups Is Expected to Grow

Multiple Choice

Which of the following population groups is expected to grow most rapidly during the first half of the 21st century?

A) Male centenarians, i.e., those 100 years of age or more
B) Female centenarians, i.e., those 100 years of age or more
C) Individuals who are HIV positive
D) All of these
E) None of these