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: Microbiology
[{'content': 'Diagnostic test of choice for neurosyphilis is - \nSelect and explain. \nA. VDRL, B. FTA-ABS, C. TPI, D. RPR', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]