This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Breast, Subject name: Pathology
[{'content': 'All are risk factor for breast carcinoma except- \nSelect and explain. \nA. OCP, B. Early mensturation, C. Family history, D. Late menopause', 'role': 'user'}, {'content': 'Answer: A \nExplanation: First-degree relative with breast cancer Menstrual historyAge at menarche <12 yearsAge at menopause >55 years Other Possible Factors Exogenous estrogens Oral contraceptives Obesity High-fat diet Alcohol consumption Cigarette smoking ref : Robbins Basic Pathology, 9E,page-708 ref img', 'role': 'assistant'}]