This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Liver, Subject name: Surgery
All are risk factors for HCC except:- 
Select and explain. 
A. HBV, B. HCV, C. Alcohol, D. IBS
D: IBS
Answer: D: IBS 
Explanation: Conditions associated with hepatocellular carcinoma:- 1. Cirrhosis 2. Metabolic disease 3. Environmental Condition Condition Condition HBV HCV Alcohol Autoimmune chronic active hepatitis Cryptogenic cirrhosis Cirrhosis due to NAFLD Primary biliary cirrhosis Hereditary hemochromatosis Hereditary tyrosinemia Alpha-1 antitrypsin deficiency Ataxia telangiectasia Types 1 and 3 glycogen storage disease Galactosemia Hereditary hemorrhagic telengiectasia Porphyria cutanea tarda Wilson's disease Orotic aciduria Alagille's syndrome (congenital cholestatic sydnrome) Thorotrast( Thorium dioxide) Androgenic steroids Cigarette smoking Aflatoxin