What Are the Two Primary Goals of the Study of Biological

What are the two primary goals of the study of biological aging?

A) to slow senescence, and to cure the diseases of old age
B) to understand changes in the body that come with age and to apply this knowledge
C) to identify the environmental causes of super longevity, and to develop models for increasing the maximum human life span
D) to develop a comprehensive theory of aging and to lobby for more government funding for aging research