This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteriology, Subject name: Microbiology
Confirmatory test for syphilis is-rpt qun 
Select and explain. 
A. FTA-ABS, B. VDRL, C. PCR, D. Culture and sensitivity
A: FTA-ABS
Answer: A: FTA-ABS 
Explanation: rpt qun