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: Anaesthesia
[{'content': 'About CPAP all are true except – \nSelect and explain. \nA. Given prophylactically in all preterm with respiratory distress, B. Started with FiO2 50-60%, C. Given in infants less than 28 weeks and less than 1 kg weight, D. Improves oxygenation and improves lung compliance', 'role': 'user'}, {'content': 'Answer: B \nExplanation: CPAP is started at a pressure of 5 cm of H2O and FiO2 of 40-50%.', 'role': 'assistant'}]