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': 'Hetch Giant cell pneumonia is caused by \nSelect and explain. \nA. Mumps virus, B. Rubella, C. Rubeola, D. Varicella', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Hetch Giant cell pneumonia is caused by Rubeola or Measles virus.', 'role': 'assistant'}]