The "Demographic Cross-Over Effect" Refers to Which of the Following

Multiple Choice

The "demographic cross-over effect" refers to which of the following phenomena?

A) At advanced ages, men have a higher life expectancy than women
B) Migrant populations are often undercounted in census data
C) More robust "survivability" for minority persons who have experienced social disadvantage and still lived 85 years
D) Death rate declines, followed by birth rate decline