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': 'Non granulomatous uveitis- all are causes except \nSelect and explain. \nA. Ankylosing Spondylitis, B. Sarcoidosis, C. Juvenile Idiopathic Ahritis, D. Posner Schlossman Syndrome', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Answer- B. Sarcoidosis', 'role': 'assistant'}]