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': 'Treatment of endometriosis in an infeile female: \nSelect and explain. \nA. Danazol, B. Clomiphene, C. Gn RH analogue, D. Progesterone', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Clomiphene', 'role': 'assistant'}]