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
True about tongue cancer: 
Select and explain. 
A. Most common type is adenocarcinoma, B. Cervical lymph node metastasis is universally present, C. MC site is on Lateral margin, D. Slurring of speech is a common complaint
C: MC site is on Lateral margin
Answer: C: MC site is on Lateral margin 
Explanation: Ans. (c) MC site is on Lateral marginRef. Bailey & Love 26th ed. 713-14TONGUE CANCER* MC site is middle of lateral border or ventral aspect of the tongue.* MC histological type is squamous cell carcinoma.* MC complaint: Mid-irritation of tongue.* MC associated risk factors are tobacco and alcohol.* MC variety is ulcerative.* ONLY 30% patients present with cervical node metastasis.* The intrinsic tongue musculature provides little restriction to tumour growth, thus it may enlarge considerably before producing symptoms.* Presents as painless mass or ulcer that fails to heal after minor trauma.