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
[{'content': 'True about pancreatic carcinoma -a) Head is the most common siteb) Pain is the most common symptomc) Obstruction of bile & pancreatic secretion is commond) 80% cases respond well to resection \nSelect and explain. \nA. a, B. bc, C. ad, D. ac', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Pancreatic cancer has a very bad prognosis — with a 5-year survival of only 5%.\nOnly possible effective tlt is complete surgical resection.\nSuch curative resection is possible only in 10-15% of patients (usually those individuals with a tumor in the pancreatic head). The 5 year survival rate following such resection is only 10%.', 'role': 'assistant'}]