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: Ophthalmology
[{'content': 'Dendritic Keratitis is characteristic of : \nSelect and explain. \nA. Herpes virus, B. Pseudomonas, C. Streptococci, D. Staphylococci', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Herpes virus', 'role': 'assistant'}]