This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
[{'content': 'Commonest hepatotropic virus causing increased chronic carrier state is - \nSelect and explain. \nA. HEV, B. HAV, C. HBV, D. HCV', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Chronic carrier stay seem in infection with HCV REF:MICROBIOLOGY ANANTHA NARAYANAN NINTH EDITION PAGE.551', 'role': 'assistant'}]