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': 'The type of Diphtheria with highest moality is \nSelect and explain. \nA. Pharyngeal, B. Nasal, C. Laryngeal, D. Conjuctival', 'role': 'user'}, {'content': "Answer: C \nExplanation: Laryngeal diphtheria causes asphyxia due to mechanical obstruction of the respiratory passage by the pseudomembrane. Emergency tracheostomy may be necessary in such cases. Reference: Textbook of Microbiology; Anathanarayan and panicker's; 10th edition; Page no: 240", 'role': 'assistant'}]