This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hepatitis, Subject name: Medicine
[{'content': 'Most common route of transmission of hepatitis C: \nSelect and explain. \nA. IV drug abuse, B. Sexual contact, C. Factor 8 concentrate, D. Feco-oral route', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Screening of donated blood for HCV antibody has decreased the risk of transfusion-associated HCV infection Persons who inject illegal drugs with non-sterile needles or who sno cocaine with shared straws are at highest risk for HCV infection. In developed countries, most new HCV infections are related to intravenous drug abuse (IVDA).', 'role': 'assistant'}]