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
Which of the following is false about Chicken pox 
Select and explain. 
A. Causative agent is varicella zoster, B. IP is 14-16 days, C. Secondary attack rate is about 60%, D. Rash spares palms & soles
C: Secondary attack rate is about 60%
Answer: C: Secondary attack rate is about 60% 
Explanation: SAR of Chicken pox is 90%.