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: Dental
[{'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: In early latent syphilis (relapsing syphilis), recurrence of chancre occurs at the site of the original chancre, it is referred to as chancre redux.', 'role': 'assistant'}]