This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Medicine
[{'content': 'Which of the following is not seen in ARDS? \nSelect and explain. \nA. Hypoxemia, B. Hypercapnia, C. Pulmonary edema, D. Stiff lung', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ref: Harrison's 18/e p2206, 17/e p1680,1681", 'role': 'assistant'}]