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
Minimum quantity of blood required to be preserved for chemical analysis is - 
Select and explain. 
A. 2 ml, B. 10 ml, C. 50 ml, D. 100 ml
B: 10 ml
Answer: B: 10 ml 
Explanation: Blood → 30 ml (minimum 10 ml)
Urine →  30 ml