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
Tissue biopsy for histopathological examination should be sent in: DNB 09 
Select and explain. 
A. Normal saline, B. Formalin, C. Rectified spirit, D. Saturated solution of saline
B: Formalin
Answer: B: Formalin 
Explanation: Ans. Formalin