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: Radiology
IOC for acoustic neuroma 
Select and explain. 
A. CT, B. GD enhanced MRI, C. Angiography, D. Four vessels DSA
B: GD enhanced MRI
Answer: B: GD enhanced MRI 
Explanation: IOC for acoustic neuroma - Gadolinium enhanced MRI.