Even with Universal Access to Health Care,disparities Exist Between Wealthy

Even with universal access to health care,disparities exist between wealthy and poorer individuals.One factor that may explain this discrepancy is

A) education and health literacy are higher among those with higher incomes.
B) health varies within countries, and women are healthier than men.
C) those with the lowest levels of social support are healthier than those with many social contacts.
D) all of these contribute to health disparities.