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 of the following are true regarding Haemophilus influenzae except - 
Select and explain. 
A. It can be a part of the normal flora in some persons, B. The serotyping is based on the bacterial outer membrane proteins, C. It requires Haemin and NAD for growth in culture medium, D. Type b is responsible for invasive disease
B: The serotyping is based on the bacterial outer membrane proteins
Answer: B: The serotyping is based on the bacterial outer membrane proteins 
Explanation: None