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
[{'content': 'Currently the most common cause for chronic HCV infection is : \nSelect and explain. \nA. Blood product transfusion, B. Anal sex with prostitutes, C. IV drug abuse, D. Blood product transfusion', 'role': 'user'}, {'content': "Answer: C \nExplanation: Intravenous drug use is currently the most common cause of hepatitis C Ref : Schiff's diseases of liver , Edition -11 , Page - 4.", 'role': 'assistant'}]