This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Pathology
Chronic persistent hepatitis and hepatitis are differentiated by - 
Select and explain. 
A. Anti-SM, B. CRP, C. Ahritis, D. Liver biospy
D: Liver biospy
Answer: D: Liver biospy 
Explanation: chronic hepatitis &hepathitis is differentiated by liver biopsy