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': "Rectal biopsy taken from Hirschsprung's disease from \nSelect and explain. \nA. Dilated part, B. Transitional part, C. Constricted part, D. Any of the above", 'role': 'user'}, {'content': 'Answer: C \nExplanation: Affected part of Hirschsprung’s disease is cosntricted.', 'role': 'assistant'}]