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
Which of the following polyps is not premalignant - 
Select and explain. 
A. Juvenile polyposis syndrome, B. Peutz jegher's syndrome, C. Ulcerative colitis, D. Familial polyposis coli
C: Ulcerative colitis
Answer: C: Ulcerative colitis 
Explanation: Ans. 'c' i.e. Ulcerative colitis