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: Microbiology
[{'content': "Hecht's pneumonia is a complication of \nSelect and explain. \nA. Measles, B. Mumps, C. AIDS, D. Mycoplasma", 'role': 'user'}, {'content': "Answer: A \nExplanation: Hecht's pneumonia is\xa0 a giant cell pneumonia in immunodeficient people,rare complication of measles.", 'role': 'assistant'}]