This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous system, Subject name: Physiology
[{'content': 'Cushing phenomenon is \nSelect and explain. \nA. Low BP and high hea rate, B. High BP and hea rate, C. Low BP and low hea rate, D. High BP and low hea rate', 'role': 'user'}, {'content': "Answer: D \nExplanation: Cushing reflex (also referred to as the vasopressor response, the Cushing effect, the Cushing reaction, the Cushing phenomenon, the Cushing response, or Cushing's Law) is a physiological nervous system response to increased intracranial pressure (ICP) that results in Cushing's triad of increased blood pressure Ref: guyton and hall textbook of medical physiology 12 edition", 'role': 'assistant'}]