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
What is the mode of treatment of squamous cell carcinoma of maxillary sinus stage T3N0M0 ? 
Select and explain. 
A. Maxillectomy, B. Radiotherapy, C. Maxillectomy and Radiotherapy, D. Maxillectomy and Chemotherapy
C: Maxillectomy and Radiotherapy
Answer: C: Maxillectomy and Radiotherapy 
Explanation: T3/N0/M0 indicates stage III. T3 - Tumor larger than 4 cm or involving facial bones (maxilla, mandible, orbit, or temporal N0 - No evidence of regional lymph node metastasis M0 - No distant metastasis Maxillectomy followed by Radiotherapy is the treatment of choice here. Combination of surgery and radiotherapy gives better results than either alone.