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
Not a premalignant lesion of oral cavity 
Select and explain. 
A. Erythroplakia, B. Syderophonic dysphagia, C. Ranula, D. Submucous fibrosis
C: Ranula
Answer: C: Ranula 
Explanation: None