This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Oral Cavity, Subject name: Surgery
A 62-year-old alcoholic presents with an indurated ulcer, 1.5 cm in length, in the left lateral aspect of her tongue (not fixed to the alveolar ridge). There are no clinically abnormal glands palpable in the neck, and a biopsy of the tongue lesion reveals squamous cell carcinoma What should she undergo?Oral tongue squamous cell carcinoma 
Select and explain. 
A. Chemotherapy, B. Local excision of the ulcer, C. Wide excision and left radical neck dissection, D. Antibiotic therapy and should be encouraged to stop smoking
C: Wide excision and left radical neck dissection
Answer: C: Wide excision and left radical neck dissection 
Explanation: Squamous cell carcinoma of the tongue frequently (40-60%) metastasizes to the lymph glands. Carcinoma of the tongue usually commences at the tip or side. The 5-year survival rate for carcinoma of the tongue is 40%, but it improves to 55% if lymph nodes are not involved.