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': 'Most common complication following haemorrhoidectomy is \nSelect and explain. \nA. Internal spincter damage, B. Infection, C. Bleeding, D. Urinary retention', 'role': 'user'}, {'content': 'Answer: D \nExplanation: MC Most Common complication following haemorrhoidectomy is Pain.\n2nd\xa0Common complication following haemorrhoidectomy is urinary retension.', 'role': 'assistant'}]