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: Ophthalmology
A boy presents with diplopia and restriction of eye movements following blunt trauma to his eye. X-ray reveals blow out fracture of orbit. Which pa of orbit is most likely damaged: 
Select and explain. 
A. Superior wall, B. Inferior wall, C. Lateral wall, D. Medial wall
B: Inferior wall
Answer: B: Inferior wall 
Explanation: B i.e. Inferior wall Blow out fracture mainly involve orbital floor (inferior wall) & medial wall Q. It presents with hanging drop or tear drop sign Q.