This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gas Transport, Subject name: Physiology
[{'content': 'Co2 causes? \nSelect and explain. \nA. Decrease respiratory drive, B. Reduces cerebral blood flow, C. Depresses vasomotor centre, D. Respiratory stimulation by central chemoreceptc', 'role': 'user'}, {'content': "Answer: D \nExplanation: ANSWER: (D) Respiratory stimulation by central chemoreceptorsREF: Ganong's 22nd ed chapter 31Co2 causes direct stimulation of vasomotor centre", 'role': 'assistant'}]