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': 'Orbital lesions of childhood include all of the following except: \nSelect and explain. \nA. Lymphangioma, B. Secondary orbital meningioma, C. Cavernous haemangioma, D. Neurofibroma', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. Secondary orbital meningioma', 'role': 'assistant'}]