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: Microbiology
A viral organism was isolated from a painful blister on the lip of a girl. The agent was found to double-stranded, linear DNA and was enveloped. Most likely causative organism is: 
Select and explain. 
A. EBV, B. HSV, C. CMV, D. Pox
B: HSV
Answer: B: HSV 
Explanation: HSV