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': 'Only simple cholecystectomy is adequate in which stage of gallbladder cancer \nSelect and explain. \nA. Stage IA, B. Stage IB, C. Stage III, D. Stage IV', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Answer- A. Stage IAAccording to TNM staging, Simple cholecystectomy is done for T1a which is included in stage-I.T1a- simple cholecystectomyT1b, II & III- Extended cholecystectomyIV- Palliative treatment', 'role': 'assistant'}]