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': 'Which of the following is false about Chicken pox \nSelect and explain. \nA. Causative agent is varicella zoster, B. IP is 14-16 days, C. Secondary attack rate is about 60%, D. Rash spares palms & soles', 'role': 'user'}, {'content': 'Answer: C \nExplanation: SAR of Chicken pox is 90%.', 'role': 'assistant'}]