This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable Diseases, Subject name: Social & Preventive Medicine
[{'content': 'Most common manifestation of mumps in adult males - \nSelect and explain. \nA. Aseptic meningitis, B. Encephalitis, C. Orchitis, D. Sinusitis', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i. e., Orchitis o Orchiyid is the most common manifestation of mumps among postpubertal males", 'role': 'assistant'}]