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: Pathology
A patient is diagnosed of oral cancer of stage T3N2M0 
Select and explain. 
A. Surgery, B. Surgery + radiotherapy, C. Chemotherapy alone, D. Surgery + chemotherapy
B: Surgery + radiotherapy
Answer: B: Surgery + radiotherapy 
Explanation: None