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
About CPAP all are true except – 
Select and explain. 
A. 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
B: Started with FiO2 50-60%
Answer: B: Started with FiO2 50-60% 
Explanation: CPAP is started at a pressure of 5 cm of H2O and FiO2 of 40-50%.