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': 'Which is the commonest complication of Mumps in adults ? \nSelect and explain. \nA. Encephalitis, B. Orchitis, C. Pancreatitis, D. Carditis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Meningoencephalitis is common in children. Unilateral deafness and thyroiditis are also known complication.', 'role': 'assistant'}]