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': 'In cases of hypercapnia there is \nSelect and explain. \nA. Increased pH of blood, B. Decreased pH of blood, C. Remains same, D. Increased oxygen concentration in blood', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]