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': "Which of the following polyps is not premalignant - \nSelect and explain. \nA. Juvenile polyposis syndrome, B. Peutz jegher's syndrome, C. Ulcerative colitis, D. Familial polyposis coli", 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. 'c' i.e. Ulcerative colitis", 'role': 'assistant'}]