All but Which of the Following Factors Are Cited in the Text

All but which of the following factors are cited in the text to explain why African Americans have a higher death rate due to coronary heart disease than Whites Americans?

A) African Americans typically receive less aggressive medical treatments than do White Americans.
B) African Americans have higher rates of hypertension.
C) African Americans have higher rates of obesity.
D) African American have higher rates of diabetes.
E) African Americans have a genetic predisposition toward the development of CHD.