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': 'True about chancre is all except \nSelect and explain. \nA. Tender ulcer, B. Raised borders, C. Round border, D. Heal by 6 weeks spontaneoulsy', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Chancre is non-tender ulcer seen in primary syphilis.', 'role': 'assistant'}]