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
A fracture of eye by a ping pong bolt is: 
Select and explain. 
A. Blow out fracture, B. Orbital fracture, C. Blow in fracture, D. Compound fracture
A: Blow out fracture
Answer: A: Blow out fracture 
Explanation: None