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': 'Deep venous system of brain consists of -a) Internal cerebral veinb) Great cerebral veinc) Basal veinsd) Cavernous sinus \nSelect and explain. \nA. abc, B. bc, C. acd, D. bcd', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Deep veins of the cerebral hemispheres\n\nInternal cerebral veins (two)\nBasal veins (two)\nGreat cerebral vein of GalenQ', 'role': 'assistant'}]