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
[{'content': 'Conjugate vaccines are available for the prevention of invasive disease caused by all of the following except - \nSelect and explain. \nA. H influenzae, B. Strep pneumoniae, C. N. meningitidis (group C), D. N. meningitidis (group B)', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]