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: Skin
[{'content': 'All is true about syphilis except \nSelect and explain. \nA. Seropositive infant not treated at bih if mother received penicillin in 3rd trimester, B. For neurosyphilis FTA-ABS is sensitive; VDRL diagnostic but CSF pleocylosis is best treatment response guide., C. HIV patients are less likely to become VDRL nonreactive after treatment, D. EIA+, RPR+, indicate past or current infection', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Seropositive infant not treated at bih if mother received penicillin in 3rd trimester', 'role': 'assistant'}]