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
[{'content': 'True about Hirschsprung’s disease is \nSelect and explain. \nA. Involved segment of intestine is dilated, B. Non passage of meconium, C. Target sign, D. All of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Hirschsprung’s disease presents with non passage of stools in infants. Involved segment is not dilated Target sign is seen in intusussuption.', 'role': 'assistant'}]