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
Non typable strains of H. influenzae all are true except 
Select and explain. 
A. Most commonly affects adults, B. Non capsulated, C. Often causes meningitides, D. None of the above
C: Often causes meningitides
Answer: C: Often causes meningitides 
Explanation: None