Even Among People Who Have the Same Access to Medical

Even among people who have the same access to medical resources,people of higher social rank and prestige tend to live healthier lives.Why is this?

A) People of higher social rank experience more activity,which keeps them from focusing on problems.
B) People of higher social rank experience less stress because they are more in control of their lives.
C) People of higher social rank are more valued by all social classes.
D) People of higher rank have more access to medical resources.
E) People of lower rank have less access to medical resources.