This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head and neck, Subject name: Surgery
Which of the following best represents 'ranula' 
Select and explain. 
A. A type of epulis, B. A thyroglossal cyst, C. Cystic swelling in the floor of mouth, D. Forked uvula
C: Cystic swelling in the floor of mouth
Answer: C: Cystic swelling in the floor of mouth 
Explanation: Ranula is an extravasation cyst arising from sublingual gland or mucous glands of Nuhn or glands of Blandin in the floor of mouth SRB,5th,365.