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
Hecht's pneumonia is a complication of 
Select and explain. 
A. Measles, B. Mumps, C. AIDS, D. Mycoplasma
A: Measles
Answer: A: Measles 
Explanation: Hecht's pneumonia is  a giant cell pneumonia in immunodeficient people,rare complication of measles.