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': 'What is the recommended isolation period of Hepatitis A from the initial onset of symptoms? \nSelect and explain. \nA. 1 week, B. 2 weeks, C. 3 weeks, D. 4 weeks', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Isolation period of Hepatitis A is first 14 days of illness and for at least 7 days after jaundice show up. Incubation period of Hepatitis A is 10-50 days, commonly about 30-35 days.', 'role': 'assistant'}]