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
Commonest association seen in carcinom gall bladder? 
Select and explain. 
A. Peritoneal deposits, B. Duodenal infiltration, C. Duodenal infiltration, D. Cystic node
C: Duodenal infiltration
Answer: C: Duodenal infiltration 
Explanation: Ans. is 'c' i.e. Secondaries liver