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: Gynaecology & Obstetrics
Teratoma arises from : 
Select and explain. 
A. Totipotent cells, B. Mesodermal cells, C. Ectodermal cells, D. Endodermal cells
A: Totipotent cells
Answer: A: Totipotent cells 
Explanation: Totipotent cells