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
Which is not true of Carcinoma tongue- 
Select and explain. 
A. Lateral border is involved, B. Cervical lymph node involvement, C. Commonly adeno carcinoma, D. Tobacco chewing is a risk factor
C: Commonly adeno carcinoma
Answer: C: Commonly adeno carcinoma 
Explanation: None