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': 'Secondary syphilis is characterised by all except \nSelect and explain. \nA. Cutaneous coppery rashes, B. Moth - eaten alopecia, C. Gummatous ulcers, D. Ivory sequestrum', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Gummatous ulcers are seen in tertiary syphilis.', 'role': 'assistant'}]