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
Ideal imaging method for diagnosis of hydrocephalous in infant is 
Select and explain. 
A. X-Ray, B. CT Scan, C. USG, D. MRI
C: USG
Answer: C: USG 
Explanation: C i.e. USG