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
Best forensic sample for DNA analysis is: TN 09 
Select and explain. 
A. Blood in EDTA, B. Hair, C. Vitreous humor, D. Femur bone
A: Blood in EDTA
Answer: A: Blood in EDTA 
Explanation: Ans. Blood in EDTA