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: Dental
[{'content': 'Eczema herpeticum is caused by – \nSelect and explain. \nA. Herpes simplex virus, B. Varicella, C. CMV, D. BPV', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Herpes simplex virus is the most common cause of Eczema herpaticum. Other viruses causing Eczema herpaticum are Coxsackievirus A-16, vaccinia virus, Small pox vaccination', 'role': 'assistant'}]