This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': 'Breast carcinoma is seen in women who - \nSelect and explain. \nA. Consume fatty food, B. Have early menopause, C. Smoke, D. Have multiple sex-paners', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Answer (a) Consume fatty food "The longer women breastfeed, the greater the reduction in risk. Lactation suppresses ovulation and may trigger terminal differentiation of luminal cells. The lower incidence of breast cancer in developing countries largely can be explained by the more frequent and longer nursing of infants."', 'role': 'assistant'}]