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: Medicine
[{'content': 'Most common cause of death in diphtheria is due to \nSelect and explain. \nA. Airway compromise, B. Toxic cardiomyopathy, C. Sepsis, D. Descending polyneuropathy', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Answer- B. Toxic cardiomyopathyMost common cause of death in diphtheria cardiomyopathy', 'role': 'assistant'}]