The Research Findings That Having Long-Lived Ancestors Was Important to Health

The research findings that having long-lived ancestors was important to health only up to age 60 and that stress- related diseases before age 50 were not predictive of longevity point to the notion that

A) variables that predict health in early life may not in old age.
B) only exercise and diet can reliably predict longevity.
C) longevity cannot be determined.
D) the theory of programmed cell death is true.