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: Surgery
Ranula is a condition which occur in: 
Select and explain. 
A. Pre auricular area, B. Medial angle of orbit, C. Nasolabial angle, D. Floor of the mouth
D: Floor of the mouth
Answer: D: Floor of the mouth 
Explanation: None