This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Infection, Subject name: Medicine
[{'content': 'Generalized paresis of Insane is seen in- \nSelect and explain. \nA. Primary stage, B. Secondary stage, C. Neuro syphilis, D. Congenital syphilis', 'role': 'user'}, {'content': "Answer: C \nExplanation: The major clinical categories of symptomatic neurosyphilis include meningeal, meningovascular, and parenchymatous syphilis. The last category includes general paresisand tabes dorsalis. The onset of symptoms usually occurs <1 year after infection for meningeal syphilis, up to 10 years after infection for meningovascular syphilis, at ~20 years for general paresis, and at 25-30 years for tabes dorsalis. (Harrison's Principles of internal medicine, 20 th edition, page 1389)", 'role': 'assistant'}]