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': "Acute pseudo-obstruction of the colon known as? \nSelect and explain. \nA. Sjogren's syndrome, B. Gardner's syndrome, C. Ogilivie's syndrome, D. Peutz-jegher's syndrome", 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Ogilivie's syndrome", 'role': 'assistant'}]