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: ENT
Which Ca has best prognosis: 
Select and explain. 
A. Carcinoma lip, B. Carcinoma cheek, C. Carcinoma tongue, D. Carcinoma palate
A: Carcinoma lip
Answer: A: Carcinoma lip 
Explanation: Oral malignancy with best prognosis is carcinoma lips. Oral cancer with worst prognosis is floor of mouth carcinoma.