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
Dentigerous cyst arises from- 
Select and explain. 
A. An unerupted tooth, B. Apex of an infected tooth, C. Nasopalatine cysts, D. Solitary bone cyst
A: An unerupted tooth
Answer: A: An unerupted tooth 
Explanation: None