This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Impoant Viral Diseases in Children, Subject name: Pediatrics
[{'content': 'Most common complication of measles is: \nSelect and explain. \nA. Orchitis, B. Pneumonia, C. Otitis media, D. Seizures', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Acute otitis media is the most common complication of measles. Second commonest is bronchopneumonia. The usual bacterial pathogens are Pneumococcus, Staphylococcus aureus and sometimes gram-negative bacteria.', 'role': 'assistant'}]