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: Pathology
Mumps is caused by: 
Select and explain. 
A. Orthomyxo virus, B. Paramyxo virus, C. Rheno virus, D. EB virus
B: Paramyxo virus
Answer: B: Paramyxo virus 
Explanation: None