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': 'Jarisch Herxheimer reaction is commonly seen in – \nSelect and explain. \nA. Early syphilis, B. Late congenital syphilis, C. Latent syphilis, D. Syphilis of cardiovascular system', 'role': 'user'}, {'content': 'Answer: A \nExplanation: In syphilis JH reaction is most common in secondary syphilis, followed by primary syphilis, followed by early latent syphilis :- Secondary > Primary\xa0> Early latent.', 'role': 'assistant'}]