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
True about chicken pox ? 
Select and explain. 
A. Caused by Human Herpes Virus-3, B. Scab is infective, C. Rash is deep seated, D. SAR is 70%
A: Caused by Human Herpes Virus-3
Answer: A: Caused by Human Herpes Virus-3 
Explanation: Ans. is 'a' i.e., Caused by Human Herpes Chickenpox is caused by varicella zoster virus (Human Herpes Virus-III or Herpes simplex type-III).