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': 'Which of the following is the most specific test to diagnose syphilis - \nSelect and explain. \nA. VDRL Test, B. Wassermann Test, C. RPR Test, D. FTA-ABS', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., FTA-ABS", 'role': 'assistant'}]