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
[{'content': '"Blow out " fracture of orbit involve -a) Floorb) Medial wallc) Lateral walld) Roofe) Apex \nSelect and explain. \nA. ac, B. a, C. ad, D. ab', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Blow out fracture involves :- i) Posterio-medial part of floor (most commonly), ii) Medial wall.', 'role': 'assistant'}]