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: Pathology
In biopsy true about formalin as fixative is all except 
Select and explain. 
A. To prevent autolysis, B. To make tissue rigid, C. To kill micro organisms, D. 2% forrnaline is used
D: 2% forrnaline is used
Answer: D: 2% forrnaline is used 
Explanation: None