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
[{'content': 'All are true about pancreatic cancer, EXCEPT: \nSelect and explain. \nA. It is usually associated with poor prognosis, B. Most frequent site is in the head of the pancreas, C. 90 % cases are inoperable at the time of the diagnosis, D. 5 year survival is 40 %', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Pancreatic cancer is associated with a poor prognosis. Infiltrating ductal adenocarcinomas account for the vast majority of cases. Most frequently site is in the head of pancreas. At the time of diagnosis 85-90% of patients have inoperable 5-year survival rate of only 5% Ref: Harrison, Edition -18, Page-786.', 'role': 'assistant'}]