Today's Researchers Recognize Stages or Periods in Late Adulthood

Today's researchers recognize stages or periods in late adulthood.Which of the following describes the frail old?

A) Mary: a sixty-nine-year-old social worker who lives in her home and continues to offer private counselling two days a week.
B) Robin: a seventy-two-year-old who continues to paint every day,as she did for forty years running her own art studio and classes.
C) Janet: a retired seventy-six-year-old who takes two European trips every year,one with her daughters and the other with her lifelong friends.
D) Helen: an eighty-five-year-old retired mother and grandmother,who lives in a long-term-care facility due to her arthritis,but is visited daily by family.