This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Pathology
. The highest malignant potential is seen in - 
Select and explain. 
A. Crohn's disease, B. Ulcerative colitis, C. Familial polyposis, D. Infantile polyp
C: Familial polyposis
Answer: C: Familial polyposis 
Explanation: The malignant potential of familial polyposis coli is very high. Colorectal cancer develops viually in 100% of cases by age of 50 years if not treated with colectomy. TEXTBOOK OF PATHOLOGY 6TH EDITION HARSH MOHAN PAGE NO:585