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
Ulcerative colitis progressing to malignancy is characterized by following except - 
Select and explain. 
A. Risk increases with the time, B. Prognosis worsens, C. Prognosis depends on period, D. Forms pseudopolyps
D: Forms pseudopolyps
Answer: D: Forms pseudopolyps 
Explanation: None