This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteria, Subject name: Microbiology
All the following are true about H. influenza except: 
Select and explain. 
A. It can be part of normal flora of some persons, B. The serotyping is based on bacterial outer membrane protein, C. It requires Hemin and NAD for growth in culture medium, D. Type b is responsible for invasive disease
B: The serotyping is based on bacterial outer membrane protein
Answer: B: The serotyping is based on bacterial outer membrane protein 
Explanation: Ans. is 'b' i.e., The serotyping is based on bacterial outer membrane proteinBased on Capsular polysaccharide H. influenzae has 6 serotypes (a, b, c, d, e, f) b subtype is Most Dangerous.