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: Pathology
[{'content': 'Mumps is characterized by triad of: \nSelect and explain. \nA. Epidemic parotitis, orchitis-oophoritis, pancreatitis., B. Orchitis-oophoritis, encephalitis, pancreatitis., C. Epidemic parotitis, meningoencephalitis, pancreatitis., D. None of the above.', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]