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
Congenital hypertropic pyloric stenosis is diagnosed by – 
Select and explain. 
A. CT, B. USG, C. MRF, D. X-ray
B: USG
Answer: B: USG 
Explanation: USG is the investigation of choice for CHPS