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
Isolation period of hepatitis A is 
Select and explain. 
A. 1 week, B. 2 weeks, C. 3 weeks, D. 4 weeks
B: 2 weeks
Answer: B: 2 weeks 
Explanation: 2 weeks