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: Social & Preventive Medicine
[{'content': "Which is the most common complication of chicken pox in neonates? \nSelect and explain. \nA. Pneumonia, B. Encephalitis, C. Reye's syndrome, D. Hemorrhages", 'role': 'user'}, {'content': 'Answer: A \nExplanation: The most common complication of chicken pox in neonates, adults and the immunocompromised is pneumonia. But in children varicella pneumonia is an uncommon complication. Ref: Park 21st edition, Page 135', 'role': 'assistant'}]