This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteriology, Subject name: Microbiology
[{'content': 'Waterhouse-Friderichsen syndrome is seen in \nSelect and explain. \nA. Pneumococci, B. Neisseria meningitidis, C. Pseudomonas, D. Yersinia', 'role': 'user'}, {'content': "Answer: B \nExplanation: Fulminant meningococcemia caused by Neisseria meningitidis is called Waterhouse Friderichsen syndrome. Fatal condition - characterized by shock, disseminated intravascular coagulation and multisystem failure. Meningococcal disease is ored by the deficiency of the terminal component (C5-C9). Reference: Textbook of Microbiology; Anathanarayan and panicker's; 10th edition; Page no: 232", 'role': 'assistant'}]