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: Microbiology
All are true about Influenza virus except 
Select and explain. 
A. Influenza A is m/c cause of outbreak, B. Incubation period is 2-3 weeks, C. Type-B cause Reye's syndrome, D. Influenza possess two glycoprotein antigens
B: Incubation period is 2-3 weeks
Answer: B: Incubation period is 2-3 weeks 
Explanation: Incubation period of  Influenza is 18 - 72 hours.