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': "Ramu is 60 year old male with CA Descending colon presents with acute intestinal obstruction. In emergency depament tit of choice is - \nSelect and explain. \nA. Defunctioning colostomy, B. Haman's procedure, C. Total colectomy, D. Lt hemicolectomy", 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans is 'b' ie Haman's procedure As already explained above, a variety of operations can be done in the obstructing lesion of left colon depending on a variety of factors, but Haman's procedure is the most commonly preferred operation.", 'role': 'assistant'}]