This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Anatomy
A patient presented with a 1 X 1.5 cms growth on the lateral border of the tongue. The treatment indicated would be 
Select and explain. 
A. Chemotherapy, B. Laser ablation, C. Interstitial brachytherapy, D. External beam radiotherapy
C: Interstitial brachytherapy
Answer: C: Interstitial brachytherapy 
Explanation: Radiation therapy may be curative in early cancer (T1 and some T2) and may preserve maximal normal anatomy and function. Brachytherapy allows delivery of a large radiation boost to the primary tumour bed