This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
Following virus is of pox virus - 
Select and explain. 
A. Variola, B. Coxsachie, C. ECHO, D. HHV
A: Variola
Answer: A: Variola 
Explanation: Poxviruses classified into 6 genera. Among them, variola included in ohopoxviruses REF:ANATHANARAYAN AND PANIKER'S TEXTBOOK OF MICROBIOLOGY 9TH EDITION PAGE NO:561