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
Blood samples for "DNA finger printing" are transpoed in: 
Select and explain. 
A. Saline, B. EDTA, C. NaF, D. Thymol
B: EDTA
Answer: B: EDTA 
Explanation: EDTA