This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
[{'content': 'Raspberry tongue is seen in \nSelect and explain. \nA. Scarlet fever, B. Vitiligo, C. Vitamin B12 deficiency, D. Impetigo', 'role': 'user'}, {'content': 'Answer: A \nExplanation: .', 'role': 'assistant'}]