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: Medicine
A 50-year old male, working as a hotel cook, has four dependent family members. He has been diagnosed with an early stage squamous cell cancer of anal canal. He has more than 60% chances of cure. The best treatment option is: 
Select and explain. 
A. Abdomino-perineal resection, B. Combined surgery and radiotherapy, C. Combined chemotherapy and radiotherapy, D. Chemotherapy alone
C: Combined chemotherapy and radiotherapy
Answer: C: Combined chemotherapy and radiotherapy 
Explanation: Answer is C (Combined chemotherapy and Radiotherapy) A combination of chemotherapy and radiotherapy called as 'chemoradiation' is the preferred initial therapy for all anal canal tumors - Bailey