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
Acquired extra – cranial infection that causes aqueductal Stenosis is – 
Select and explain. 
A. Bacterial endocarditis, B. Mumps, C. Measles, D. Staphylococcal septicemia
B: Mumps
Answer: B: Mumps 
Explanation: Aqueductal stenosis -
Causes of acquired aqueductal stenosis

Neonatal meningitis                       o Intrauterine viral infections
Subarachnoid hemorrhage              o Mumps meningoencephalitis