This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ocular trauma , Subject name: Ophthalmology
[{'content': 'Most common cause of proptosis in adults is \nSelect and explain. \nA. Orbital cellulitis, B. Thyroid ophthalmopathy, C. Carotico-cavernous fistula, D. Trauma', 'role': 'user'}, {'content': 'Answer: B \nExplanation: (Refer: AK Khurana Comprehensive Ophthalmology, 6th edition, pg no. 403 - 407)The most common cause of unilateral proptosis in children is orbital cellulitisThe most common cause of unilateral proptosis in adults is thyroid ophthalmopathy', 'role': 'assistant'}]