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': 'True about inspiration, the intrapleural pressure becomes \nSelect and explain. \nA. More –ve, B. More +ve, C. Same, D. No relation', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]