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: Pediatrics
[{'content': 'An infant develops cough and fever. The X-ray examination is suggestive of bronchopneumonia. All of the following viruses can be the causative agent, EXCEPT: \nSelect and explain. \nA. Parainfluenza viruses, B. Influenza virus A, C. Respiratory syncytial virus, D. Mumps virus', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Mumps occur between the ages of 5 & 15. Infants are rarely involved due to presence of transplacentally acquired maternal mumps antibodies. Ref: O P Ghai Essential Pediatrics, 6th Edition, Page 209', 'role': 'assistant'}]