This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: viral infection, Subject name: Medicine
[{'content': 'Most common extra-cutaneous manifestation of chicken pox in children is: \nSelect and explain. \nA. CNS involvement, B. Varicella pneumonia, C. Congenital varicella, D. Reye syndrome', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The most common extracutaneous site of involvement in chicken pox in children is the CNS. CSF contains lymphocytes and elevated levels of protein. CNS involvement is a benign complication of VZV infection in children and generally does not require hospitalization. Aseptic meningitis, encephalitis, transverse myelitis, and Guillain-Barre syndrome can also occur.', 'role': 'assistant'}]