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: Microbiology
[{'content': 'Chancre redux is a clinical feature of - \nSelect and explain. \nA. Early relapsing syphilis, B. Late syphilis, C. Chancroid, D. Recurrent herpes simplex infection', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]