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: Medicine
Chronic liver disease is caused by: 
Select and explain. 
A. Hepatitis A, B. Hepatitis C, C. Hepatitis E, D. All of the above
B: Hepatitis C
Answer: B: Hepatitis C 
Explanation: Role of hepatitis C and B is implicated in chronic infection.