This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous (Neoplasia), 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: Ans. (b) SunitinibRef: Sabiston Textbook of surgery 18th ed ch-77, NCCN Guidelines Version 1.2013