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
Exopthalmos not present in 
Select and explain. 
A. Thyrotoxicosis, B. Blow in fracture, C. Blow out fracture, D. None of the above
C: Blow out fracture
Answer: C: Blow out fracture 
Explanation: None