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': 'A 42 year old female patient has abnormal uterine bleeding with mild atypical hyperplasia of endometrium. The treatment of choice is : \nSelect and explain. \nA. Oral contraceptive pills, B. Progesterone, C. Total hysterectomy, D. Oestrogens', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Total hysterectomy', 'role': 'assistant'}]