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: Social & Preventive Medicine
[{'content': 'A person shows HBSAg+ HBeAg+ \nWhat does that indicate? \nSelect and explain. \nA. Recovering from Hep B, B. Active replication of virus, C. Vaccination, D. Chronic hepatitis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]