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': 'Pressure volume curves of a normal  subject and patient suffering from pulmonary disease is given below. What is this patient suffering from \nSelect and explain. \nA. Pulmonary fibrosis, B. Asbestosis, C. Emphysema, D. Pulmonary congestion', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]