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: Medicine
[{'content': 'In type II respiratory failure, there is \nSelect and explain. \nA. Low pO2 and low pCO2, B. Low pO2 and high pCO2, C. Normal pO2 and high pCO2, D. Low pO2 and normal pCO2', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]