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: Surgery
[{'content': 'In hepatocellular carcinoma, risk factor most impoant is - \nSelect and explain. \nA. Alcoholic hepatitis, B. Schistosomiasis, C. Cirrhosis, D. Fasciolepsis bush infestation', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Answer is \'c\' i.e. Cirrhosis Cirrhosis is the most impoant risk factor for HCC. "75-85% of HCC occur in patients with macronodular cirrhosis" - Harrison', 'role': 'assistant'}]