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: Gynaecology & Obstetrics
[{'content': 'All are the risk factors for endometrial carcinoma except \nSelect and explain. \nA. Multiparity, B. Obesity, C. Early menarche, D. Unopposed estrogen therapy', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Pathology behind endometrial cancer is\xa0unopposed estrogen exposure to endometrium\nMultiparity is a protective factor\nRisk factors for endometrial cancer\n\nEarly menarche and Late menopause\nObesity\nPCOS\nNulliparity\nInfertility\nMedical comorbidities like Diabeties, Hypertension\nTamoxifen usage', 'role': 'assistant'}]