A Researcher States That Bone Density in Women Is Negatively

A researcher states that bone density in women is negatively associated with age. This means that:

A) as women get older, bone density tends to decrease.
B) as women get older, bone density tends to increase.
C) below-average values of age tend to accompany below-average values of bone density.
D) older women aren't any more likely than younger women to have below-average bone density.