The Best Description of the Life Expectancy of Women Relative

The best description of the life expectancy of women relative to the life expectancy of men is that the gap between men and women has:

A) remained constant at about five years' difference
B) decreased in the past 50 years as more women enter the labor force
C) widened, particularly since 1950 with women outliving men
D) widened in the past 50 years with men outliving women
E) We have no way of measuring the life expectancies of men and women