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': 'Which of the following is the drug of choice to treat endometriosis : \nSelect and explain. \nA. Testosterone propionate, B. Norethisterone, C. Medroxy progesterone, D. Danazol', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Medroxy progesterone', 'role': 'assistant'}]