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
True about hepatocelluar ca is -a) Associated with HBV and HCVb) Cirrhosis is predisposing factorc) Fibrolamellar variety is not associated with cirrhosisd) Low propensity of vascular invasione) Alcoholic cirrhosis does not predispose to HCC 
Select and explain. 
A. abc, B. bc, C. acd, D. bcd
A: abc
Answer: A: abc 
Explanation: "All patterns of hepatocellular carcinomas have a strong propensity for invasion of vascular channels." - Robbins