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': "Which is the treatment of choice for CA head of pancreas \nSelect and explain. \nA. Radiotherapy, B. Chemotherapy+ Radiotherapy, C. Whipple's Surgery, D. Resection of the entire pancreas with adjuvant chemotherapy", 'role': 'user'}, {'content': "Answer: C \nExplanation: Answer- C. Whipple's SurgeryWhipples operation (Pancreaticoduodenectomy) is the most commonly performed operation for carcinoma of head of Pancreas.", 'role': 'assistant'}]