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': "Pelvic inflammatory disease is caused by all except : \nSelect and explain. \nA. Schistosomiasis, B. Crohn's disease, C. Syphilis, D. Leprosy", 'role': 'user'}, {'content': 'Answer: D \nExplanation: Leprosy', 'role': 'assistant'}]