In a Presentation on Breast Cancer Risk Factors, a Nurse

In a presentation on breast cancer risk factors, a nurse would be accurate in making which statement?

A) "Women who breastfeed their children are at increased risk of breast cancer."
B) "Women who are more than 30% overweight are at increased risk of breast cancer."
C) "African-American women have the highest risk of breast cancer."
D) "Women who have children before age 30 are at increased risk of breast cancer."