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': 'CSF pressure depends primarily on: \nSelect and explain. \nA. Rate of CSF absorption, B. Rate of formation from the choroid plexus, C. Cerebral blood flow, D. Blood pressure', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Rate of CSF absorption', 'role': 'assistant'}]