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': 'Inspiratory reserve volume measures around \nSelect and explain. \nA. 3000 ml, B. 1200 ml, C. 2000 ml, D. 4000 ml', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Inspiratory Reserve volume\nIt is the amount of air in excess of tidal inspiration that can be inhaled with maximum effort.\nNormal value : 3,000 ml.', 'role': 'assistant'}]