This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General Considerations - Infectious Diseases, Subject name: Pediatrics
[{'content': 'Most common complication of chickenpox in children: \nSelect and explain. \nA. Encephalitis, B. Secondary bacterial infection, C. Pneumonia, D. Otitis media', 'role': 'user'}, {'content': "Answer: B \nExplanation: b. Secondary bacterial infection(Ref: Nelson's 20/e p 1579-1585> Ghai 8/e p 214-215)Secondary bacterial infections of skin, by group A Streptococcus & S. aureus, may occur in children with varicella.", 'role': 'assistant'}]