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: 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: “Colorectal cancer develops in 100% of untreated FAP patients often before the age of 30”.