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': 'Cerebral perfusion pressure is - \nSelect and explain. \nA. Aerial pressure minus peripheral venous pressure, B. Venous pressure minus aerial pressure, C. Aerial pressure minus intracranial pressure, D. Aerial pressure x venous pressure', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Aerial pressure minus intracranial pressure(Ref Principles of medical physiology p. 719.)Cerebral perfusion Pressure: is the difference between mean aerial pressure (MAP) and intracranial pressure.(ICP) or central venous pressure (CVP) whichever is greater. CPP is normally 80-100 mm Hg.", 'role': 'assistant'}]