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
Which virus families has double stranded DNA in four different isomers? 
Select and explain. 
A. Poxviruses, B. Herpesviruses, C. Rabiesviruses, D. Orthomyxoviruses
B: Herpesviruses
Answer: B: Herpesviruses 
Explanation: None