This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urology, Subject name: Surgery
Drug of choice for surgically unresectable renal cell carcinoma is ? 
Select and explain. 
A. Sorafenib, B. Sunitinib, C. Imatinib, D. Cetuximab
B: Sunitinib
Answer: B: Sunitinib 
Explanation: .