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: Anatomy
Which of the following doesnot 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: Risk factors for cholangiocarcinoma Choledochal cyst Primary sclerosing cholangitis Ulcerative colitis. RPC or hepatolithiasis. Biliary enteric anastomosis HBV, HIV, HCV Choledocholithiasis Clonorchis sinensis and opisthorchis viverrini Cirrhosis Radon Asbestos, Nitrosamines, Dioxib(AND). Diabetes, Obesity, OCP's, smoking, Thorotrast, Isoniazid(DOSTI) Ref: Sabiston 20th edition Pgno :1514