This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
[{'content': 'Most common complications of Mumps is \nSelect and explain. \nA. Orchitis and Oophoritis, B. Encephalitis, C. Pneumonia, D. Myocarditis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: At least one-third of all mumps infections are subclinical, including the majority of infections in children younger than 2 years. The most characteristic feature of symptomatic cases is swelling of the salivary glands, which occurs in about 50% of patientsThe testes and ovaries may be affected, especially after pubey. Around 20-50% of men who are infected with mumps virus develop orchitis (often unilateral).Jawetz 27e pg: 589', 'role': 'assistant'}]