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: Anatomy
[{'content': 'What is the nearest relation of the optic nerve \nSelect and explain. \nA. Pituitary Stalk, B. Internal Carotid Aery, C. Anterior Choroidal Aery, D. Anterior Communicating Aery', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B. i.e. Internal corotid aery', 'role': 'assistant'}]