This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
[{'content': 'Which test is most specific for the detection of syphilis? \nSelect and explain. \nA. Rapid plasmin reagin (RPR), B. Fluorescent treponemal antibody-absorption (FTA-ABS), C. Venereal Disease Research Laboratory (VDRL), D. Ziehl-Neelsen stain', 'role': 'user'}, {'content': 'Answer: B \nExplanation: .', 'role': 'assistant'}]