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': 'Which of the following passes through the foramen magnum EXCEPT \nSelect and explain. \nA. Veebral Aery, B. Sympathetic chain, C. Xlth cranial nerve, D. Internal carotid Aery', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e Veebral Aery', 'role': 'assistant'}]