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
X-ray detect congenital anorectal malformation at- 
Select and explain. 
A. Immediately after bih, B. 24-48 hours, C. 48-72 hours, D. After 72 hours
B: 24-48 hours
Answer: B: 24-48 hours 
Explanation: Ans. is 'b' i.e., 24-48 hours An X-ray film of the abdomen is obtained 12-24 hours after bih, with baby being kept in an inveed position.