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: Medicine
[{'content': 'Which of the following in ARDS is true? \nSelect and explain. \nA. Type 2 respiratory failure, B. Lung compliance decreased, C. Increase in diffusion capacity, D. none', 'role': 'user'}, {'content': "Answer: B \nExplanation: ARDS is a clinical syndrome of severe dyspnoea of rapid onset,hypoxaemia and diffuse pulmonary infiltrates leading to respiratory failure.ARDS is characterised by Po2/Fio2(inspiratory O2 fraction)<200 mmHg.There will be no hypercapnia,so the patient will have type 1 respiratory failure.There will be stiff-lung syndrome with collapse and decreased compliance of the lungs due to loss of surfactant. Reference:Harrison's Medicine-20 th edition,page no:2032.Textbook of pathology-Harsh Mohan,6th edition,page no:463.", 'role': 'assistant'}]