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': 'Most common tumour of pancreas is - \nSelect and explain. \nA. Adeno-carcinoma, B. Squamous cell carcinoma, C. Adeno-squamous cell carcinoma, D. Duct cell adeno carcinoma', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Duct cell adenocarcinoma", 'role': 'assistant'}]