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 of the following are known risk factors for development of endometrial carcinoma except: \nSelect and explain. \nA. Obesity, B. Family history, C. Use of hormone replacement therapy, D. Early menopause', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]