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: Pathology
The most common malignancy of the oral cavity is: 
Select and explain. 
A. Basal cell carcinoma, B. Transitional cell carcinoma, C. Melanoma, D. Squamous cell carcinoma
D: Squamous cell carcinoma
Answer: D: Squamous cell carcinoma 
Explanation: None