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: Surgery
[{'content': "Follman's balanitis is caused by - \nSelect and explain. \nA. Trichomonas, B. Candida, C. H. Ducreyl, D. None", 'role': 'user'}, {'content': "Answer: D \nExplanation: Follman's balanitis is seen in syphilis.", 'role': 'assistant'}]