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': 'Ipsilateral optic atrophy with contralateral papilloedema is a feature of : \nSelect and explain. \nA. Fischer syndrome, B. Foster kennedy syndrome, C. Vogt-kayanagi-Harada syndrome, D. WAGR syndrome', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Foster-Kennedy Syndrome', 'role': 'assistant'}]