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: Forensic Medicine
"Fracture a-Ia signature" is: 
Select and explain. 
A. A depressed fracture, B. A fissured fracture, C. Separation of the suture, D. A ring fracture
A: A depressed fracture
Answer: A: A depressed fracture 
Explanation: A depressed fracture