This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: NEET Jan 2020, Subject name: Surgery
[{'content': 'Management of RCC less than 4 cm in size: \nSelect and explain. \nA. Radical nephrectomy, B. Paial nephrectomy, C. Chemotherapy, D. Surgery followed by chemotherapy', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Indications of Paial nephrectomy/Nephron sparing surgery For stage T1a RCC size up to 4cm also for most of patients with T1b 4-7 cm RCC in solitary kidney Bilateral RCC RCC with diseased contralateral kidney like Renal aery stenosis', 'role': 'assistant'}]