Which of the Following Was NOT Suggested as a Reason

Which of the following was NOT suggested as a reason African-American women are more likely than white women to die from breast cancer,even though they are less likely to develop the disease in the first place?

A) African-American women historically have been less likely to perform regular breast self-examination.
B) African-American women are less likely to obtain mammograms.
C) African-Americans tend to consume fattier diets.
D) African-American women are genetically at increased risk for premature mortality.