This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diseases of orbit, Lids and lacrimal apparatus, Subject name: Ophthalmology
[{'content': 'Traumatic eye with late presentation of unilateral proptosis and scleral hyperamia is seen in \nSelect and explain. \nA. Retrobulbar hematoma, B. Retrobulbar cellulitis, C. Carotico cavernous fistula, D. Pneumo orbit', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Proptosis after trauma, late presentation ,scleral hyperamia, most probable diagnosis is Retrobulbar hematoma . Refer khurana 6/e 404', 'role': 'assistant'}]