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
Confirmatory test for syphilis - 
Select and explain. 
A. VDRL, B. FTA-ABS, C. RPQ, D. None
B: FTA-ABS
Answer: B: FTA-ABS 
Explanation: None