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: Forensic Medicine
For DNA test, liquid blood is preserved in: Karnataka 07; DNB 09; UP 10; NEET 13, 14 
Select and explain. 
A. Sodium citrate, B. Potassium oxalate, C. EDTA, D. Sodium fluoride
C: EDTA
Answer: C: EDTA 
Explanation: Ans. EDTA