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
All of the following viruses cause pneumonia except- 
Select and explain. 
A. Cytomegalovirus, B. Mumps, C. Measles, D. Retrovirus
B: Mumps
Answer: B: Mumps 
Explanation: complications of mumps include epididymo orchitis,meningitis ,meningoencephalitis, and less common comolicatiin include ahritis ,oophoritis ,pancreatitis etc. REF:ANANTHANARAYAN AND PANIKER'S TEXTBOOK OF MICROBIOLOGY 9TH EDITION PAGE NO:508