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: Anatomy
[{'content': 'ARDS is due to defect in \nSelect and explain. \nA. A. Hypoxemia, B. B. Hypotention, C. C. Clara cells, D. D. Endothelial cells', 'role': 'user'}, {'content': 'Answer: D \nExplanation: ALI/ARDS is initiated by injury of pneumocytes and pulmonary endothelium. Setting in motion a vicious cycle of increasing inflammation and pulmonary damage', 'role': 'assistant'}]