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
[{'content': 'False about biliary cystadenoma \nSelect and explain. \nA. CT scan is used for diagnosis, B. CA 19-9 is elevated, C. Intra hepatic location, D. Common in males', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Biliary cystic adenocarcinoma Incidence : Female : Male is 2:1. It is more common in females Ref: Sabiston 20th edition Pgno :1469', 'role': 'assistant'}]