This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Concept of health and disease, Subject name: Social & Preventive Medicine
Incubation period of Hepatitis B virus 
Select and explain. 
A. 8-10 days, B. 30-180 days, C. 1 year, D. 2 years
B: 30-180 days
Answer: B: 30-180 days 
Explanation: Incubation Period of Hepatitis B virus is 30-180 days Ref: 25th edition, Park's Textbook of Preventive and Social Medicine, Page no. 234