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: Medicine
[{'content': "The following are true about measles- \nSelect and explain. \nA. It is an RNA virus, B. Causes Koplik's spots on the conjunctiva, C. Acute catarrhal conjunctivitis is a known features, D. All the above", 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]