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
All except one are used in treatment of marjolins ulcer 
Select and explain. 
A. Wide excision, B. Radiotherapy, C. Amputation, D. Resection
B: Radiotherapy
Answer: B: Radiotherapy 
Explanation: Radiotherapy is not given for marjolin's ulcer.