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: Surgery
True about Hirschsprung’s disease is 
Select and explain. 
A. Involved segment of intestine is dilated, B. Non passage of meconium, C. Target sign, D. All of the above
B: Non passage of meconium
Answer: B: Non passage of meconium 
Explanation: Hirschsprung’s disease presents with non passage of stools in infants. Involved segment is not dilated Target sign is seen in intusussuption.