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: Medicine
Incubation period for hepatitis A : 
Select and explain. 
A. 2-6 weeks, B. 12 weeks, C. 8 weeks, D. 10 weeks.
A: 2-6 weeks
Answer: A: 2-6 weeks 
Explanation: None