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
Conjugate vaccines are available for the prevention of invasive disease caused by all of the following except - 
Select and explain. 
A. H influenzae, B. Strep pneumoniae, C. N. meningitidis (group C), D. N. meningitidis (group B)
D: N. meningitidis (group B)
Answer: D: N. meningitidis (group B) 
Explanation: None