This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2017, Subject name: Medicine
What is the incubation period of hepatitis B? 
Select and explain. 
A. 1 - 30 days, B. 15 - 45 days, C. 45 - 180 days, D. 2 weeks - 6 months
C: 45 - 180 days
Answer: C: 45 - 180 days 
Explanation: 30-180 incubation period according to text books Hepatitis B Dane paicle Earliest evidence of infection HbsAg+ (Surface antigen) First antibody to Appear IgM anti HBcAg+ HBsAg + IgM anti HBcAg + Acute Hep B