Over the Past Generation or So in the United States

Over the past generation or so in the United States, the life expectancy of:

A) both the most affluent and the poorest women has improved.
B) both the most affluent and the poorest women has deteriorated.
C) the most affluent women has improved but among the poorest women, it has not changed at all.
D) both the most affluent and the poorest women has not changed at all.
E) both the most affluent and the poorest women remains unknown and unknowable.