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: Unknown
Shingles caused by infection with: 
Select and explain. 
A. Varicella zoster virus, B. Herpes simplex virus, C. Human papilloma virus, D. Epstein-Barr virus
A: Varicella zoster virus
Answer: A: Varicella zoster virus 
Explanation: Ref. Robbins Pathology. 9th edition. Page. 358