This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neuroanatomy 1, Subject name: Anatomy
[{'content': 'Which pa of the ventricular system contains choroid plexus? \nSelect and explain. \nA. Cerebral aqueduct, B. Frontal horn, C. Interventricular foramen, D. Third ventricle', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The third ventricle has a choroid plexus; the frontal horn, and the cerebral aqueduct are all devoid of a choroid plexus; the interventricular foramen has no choroid plexus.', 'role': 'assistant'}]