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: Medicine
All can predisposes to non cirrhotic poal fibrosis, EXCEPT: 
Select and explain. 
A. Xenobiotics exposure, B. Arsenic contaminated water, C. Repeated intestinal exposure, D. Radiation exposure
D: Radiation exposure
Answer: D: Radiation exposure 
Explanation: Noncirrhotic poal hypeension is a group of disorder characterized by increase in poal pressure,due to intrahepatic or pre hepatic lesions, and absence of cirrhosis of the liver. Etiopathogenesis of NCPF xenobiotics exposure and various Immunologic abnormalities(Abnormalities of T-lymphocytes and adhesion molecules) Repeated intestinal infection Drinking of arsenic contaminated water Ref: Medicine Update 2012 Vol. 22.