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: Physiology
[{'content': 'CSF does not pass through ? \nSelect and explain. \nA. Ventricles, B. Venous sinuses, C. Epidural spaces, D. Subarachnoid space', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Epidural space', 'role': 'assistant'}]