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: Pediatrics
[{'content': 'When can one diagnose acute respiratory distress in a child ? \nSelect and explain. \nA. Within 7 days of known clinical insult, B. Respiratory failure not fully explained, C. Left ventricular dysfunction, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Reference: GHAI Essential pediatrics, 8th edition', 'role': 'assistant'}]