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 does not predispose to cholangiocarcinoma - 
Select and explain. 
A. Ulcerative colitis, B. Clonorchis sinensis, C. Choledochal cyst, D. Chronic pancreatitis
D: Chronic pancreatitis
Answer: D: Chronic pancreatitis 
Explanation: Ans is 'd' i.e., Chronic pancreatitis