This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Anatomy
A 50 yr old male with history of chronic smoking and alcohol intake presents with a lesion (shown in pic) in the oral cavity. What is the most probable diagnosis? 
Select and explain. 
A. Ranula, B. Erythroplakia, C. Carcinoma tongue, D. Cancrum oris
C: Carcinoma tongue
Answer: C: Carcinoma tongue 
Explanation: Exophytic SCC right lateral margin of tongue. Most common site of Oral cavity malignancy.