This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Sexually Transmitted Infections, 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: Chancre redux : Recurrence of the primary sore at its original site during the first two years of the disease (Relapsing stage of syphilis). Pseudochancre redux : Gummatous (teiary stage) recurrence at the site of the primary chancre.', 'role': 'assistant'}]