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
An old man who is edentulous developed squamous cell Ca in buccal mucosa that has infiltrated to the alveolus. Following is not indicated in treatment : 
Select and explain. 
A. Radiotherapy, B. Segmental mandibulectomy, C. Marginal mandibulectomy involving removal of the outer table only, D. Marginal mandibulectomy involving removal of upper half of mandible
C: Marginal mandibulectomy involving removal of the outer table only
Answer: C: Marginal mandibulectomy involving removal of the outer table only 
Explanation: None