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
Ranula is a - 
Select and explain. 
A. Mucous cyst, B. Tumor, C. Submandibular gland swelling, D. Swelling on dorsum of tongue
A: Mucous cyst
Answer: A: Mucous cyst 
Explanation: None