Which of the Following Statements About Breast Cancer Is False

Which of the following statements about breast cancer is false?

A) Cigarette smoking, obesity, and alcohol use have all been linked to a higher risk of breast cancer.
B) With early diagnosis and treatment, almost 90% of breast cancer patients survive for five years.
C) Breast cancer is the leading cause of cancer deaths in women.
D) Growth of about two-thirds of breast cancers is enhanced by circulating estrogens and progesterone.
E) 10% of breast cancers are familial.