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: Microbiology
[{'content': 'Most common 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: Ans. (d) HCV', 'role': 'assistant'}]