This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory system, Subject name: Physiology
[{'content': 'Compliance of lungs is measured by \nSelect and explain. \nA. Elasticity, B. Amount of air, C. Blood flow, D. Presence if fluid', 'role': 'user'}, {'content': 'Answer: A \nExplanation: For practical purpose, lung compliance is measured by different methods. Based on the method of measurement, lung compliance can be described as static or dynamic Ref: guyton and hall textbook of medical physiology 12 edition page number: 318,319,320', 'role': 'assistant'}]