This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable diseases, Subject name: Social & Preventive Medicine
[{'content': 'The type of Diphtheria with highest moality is- \nSelect and explain. \nA. Pharyngeal, B. Nasal, C. Laryngeal, D. Conjuntival', 'role': 'user'}, {'content': 'Answer: C \nExplanation: In laryngotracheal diphtheria if infection extends in to bronchial tree , it is the most severe form of disease. Prostration and dyspnoea occurs as a result of obstruction caused by membrane. This may cause suffocation if not treat properly with intubation or tracheostomy Reference : Park&;s Textbook of preventive and social medicine, 24th edition.Pg no171', 'role': 'assistant'}]